eb4463fde6
the kernel to (re)use the alternate signal stack. In this case, we don't return normally from the signal handler, so the kernel still thinks we are using the signal stack. The fixes a nasty bug where the signal handler can start fiddling with the stack of a thread while the handler is actually running on the same stack. MFC candidate
1461 lines
42 KiB
C
1461 lines
42 KiB
C
/*
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* Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by John Birrell.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Private thread definitions for the uthread kernel.
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*
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* $FreeBSD$
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*/
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#ifndef _PTHREAD_PRIVATE_H
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#define _PTHREAD_PRIVATE_H
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/*
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* Evaluate the storage class specifier.
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*/
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#ifdef GLOBAL_PTHREAD_PRIVATE
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#define SCLASS
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#else
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#define SCLASS extern
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#endif
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/*
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* Include files.
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*/
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#include <setjmp.h>
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#include <signal.h>
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#include <stdio.h>
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/cdefs.h>
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#include <sched.h>
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#include <spinlock.h>
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#include <pthread_np.h>
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/*
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* Define machine dependent macros to get and set the stack pointer
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* from the supported contexts. Also define a macro to set the return
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* address in a jmp_buf context.
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*
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* XXX - These need to be moved into architecture dependent support files.
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*/
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#if defined(__i386__)
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#define GET_STACK_JB(jb) ((unsigned long)((jb)[0]._jb[2]))
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#define GET_STACK_SJB(sjb) ((unsigned long)((sjb)[0]._sjb[2]))
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#define GET_STACK_UC(ucp) ((unsigned long)((ucp)->uc_mcontext.mc_esp))
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#define SET_STACK_JB(jb, stk) (jb)[0]._jb[2] = (int)(stk)
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#define SET_STACK_SJB(sjb, stk) (sjb)[0]._sjb[2] = (int)(stk)
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#define SET_STACK_UC(ucp, stk) (ucp)->uc_mcontext.mc_esp = (int)(stk)
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#define FP_SAVE_UC(ucp) do { \
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char *fdata; \
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fdata = (char *) (ucp)->uc_mcontext.mc_fpregs; \
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__asm__("fnsave %0": :"m"(*fdata)); \
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} while (0)
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#define FP_RESTORE_UC(ucp) do { \
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char *fdata; \
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fdata = (char *) (ucp)->uc_mcontext.mc_fpregs; \
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__asm__("frstor %0": :"m"(*fdata)); \
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} while (0)
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#define SET_RETURN_ADDR_JB(jb, ra) (jb)[0]._jb[0] = (int)(ra)
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#elif defined(__alpha__)
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#include <machine/reg.h>
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#define GET_STACK_JB(jb) ((unsigned long)((jb)[0]._jb[R_SP + 4]))
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#define GET_STACK_SJB(sjb) ((unsigned long)((sjb)[0]._sjb[R_SP + 4]))
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#define GET_STACK_UC(ucp) ((ucp)->uc_mcontext.mc_regs[R_SP])
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#define SET_STACK_JB(jb, stk) (jb)[0]._jb[R_SP + 4] = (long)(stk)
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#define SET_STACK_SJB(sjb, stk) (sjb)[0]._sjb[R_SP + 4] = (long)(stk)
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#define SET_STACK_UC(ucp, stk) (ucp)->uc_mcontext.mc_regs[R_SP] = (unsigned long)(stk)
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#define FP_SAVE_UC(ucp)
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#define FP_RESTORE_UC(ucp)
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#define SET_RETURN_ADDR_JB(jb, ra) do { \
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(jb)[0]._jb[2] = (long)(ra); \
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(jb)[0]._jb[R_RA + 4] = 0; \
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(jb)[0]._jb[R_T12 + 4] = (long)(ra); \
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} while (0)
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#else
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#error "Don't recognize this architecture!"
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#endif
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/*
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* Kernel fatal error handler macro.
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*/
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#define PANIC(string) _thread_exit(__FILE__,__LINE__,string)
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|
|
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/* Output debug messages like this: */
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#define stdout_debug(args...) do { \
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char buf[128]; \
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snprintf(buf, sizeof(buf), ##args); \
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_thread_sys_write(1, buf, strlen(buf)); \
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} while (0)
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#define stderr_debug(args...) do { \
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char buf[128]; \
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snprintf(buf, sizeof(buf), ##args); \
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_thread_sys_write(2, buf, strlen(buf)); \
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} while (0)
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|
|
|
|
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/*
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* Priority queue manipulation macros (using pqe link):
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*/
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#define PTHREAD_PRIOQ_INSERT_HEAD(thrd) _pq_insert_head(&_readyq,thrd)
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#define PTHREAD_PRIOQ_INSERT_TAIL(thrd) _pq_insert_tail(&_readyq,thrd)
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#define PTHREAD_PRIOQ_REMOVE(thrd) _pq_remove(&_readyq,thrd)
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#define PTHREAD_PRIOQ_FIRST() _pq_first(&_readyq)
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/*
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* Waiting queue manipulation macros (using pqe link):
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*/
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#define PTHREAD_WAITQ_REMOVE(thrd) _waitq_remove(thrd)
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#define PTHREAD_WAITQ_INSERT(thrd) _waitq_insert(thrd)
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#if defined(_PTHREADS_INVARIANTS)
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#define PTHREAD_WAITQ_CLEARACTIVE() _waitq_clearactive()
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#define PTHREAD_WAITQ_SETACTIVE() _waitq_setactive()
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#else
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#define PTHREAD_WAITQ_CLEARACTIVE()
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#define PTHREAD_WAITQ_SETACTIVE()
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#endif
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/*
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* Work queue manipulation macros (using qe link):
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*/
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#define PTHREAD_WORKQ_INSERT(thrd) do { \
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TAILQ_INSERT_TAIL(&_workq,thrd,qe); \
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(thrd)->flags |= PTHREAD_FLAGS_IN_WORKQ; \
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} while (0)
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#define PTHREAD_WORKQ_REMOVE(thrd) do { \
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TAILQ_REMOVE(&_workq,thrd,qe); \
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(thrd)->flags &= ~PTHREAD_FLAGS_IN_WORKQ; \
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} while (0)
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|
|
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/*
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* State change macro without scheduling queue change:
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*/
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#define PTHREAD_SET_STATE(thrd, newstate) do { \
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(thrd)->state = newstate; \
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(thrd)->fname = __FILE__; \
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(thrd)->lineno = __LINE__; \
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} while (0)
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/*
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* State change macro with scheduling queue change - This must be
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* called with preemption deferred (see thread_kern_sched_[un]defer).
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*/
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#if defined(_PTHREADS_INVARIANTS)
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#include <assert.h>
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#define PTHREAD_ASSERT(cond, msg) do { \
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if (!(cond)) \
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PANIC(msg); \
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} while (0)
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#define PTHREAD_ASSERT_NOT_IN_SYNCQ(thrd) \
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PTHREAD_ASSERT((((thrd)->flags & PTHREAD_FLAGS_IN_SYNCQ) == 0), \
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"Illegal call from signal handler");
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#define PTHREAD_NEW_STATE(thrd, newstate) do { \
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if (_thread_kern_new_state != 0) \
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PANIC("Recursive PTHREAD_NEW_STATE"); \
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_thread_kern_new_state = 1; \
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if ((thrd)->state != newstate) { \
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if ((thrd)->state == PS_RUNNING) { \
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PTHREAD_PRIOQ_REMOVE(thrd); \
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PTHREAD_WAITQ_INSERT(thrd); \
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} else if (newstate == PS_RUNNING) { \
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PTHREAD_WAITQ_REMOVE(thrd); \
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PTHREAD_PRIOQ_INSERT_TAIL(thrd); \
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} \
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} \
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_thread_kern_new_state = 0; \
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PTHREAD_SET_STATE(thrd, newstate); \
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} while (0)
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#else
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#define PTHREAD_ASSERT(cond, msg)
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#define PTHREAD_ASSERT_NOT_IN_SYNCQ(thrd)
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#define PTHREAD_NEW_STATE(thrd, newstate) do { \
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if ((thrd)->state != newstate) { \
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if ((thrd)->state == PS_RUNNING) { \
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PTHREAD_PRIOQ_REMOVE(thrd); \
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PTHREAD_WAITQ_INSERT(thrd); \
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} else if (newstate == PS_RUNNING) { \
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PTHREAD_WAITQ_REMOVE(thrd); \
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PTHREAD_PRIOQ_INSERT_TAIL(thrd); \
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} \
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} \
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PTHREAD_SET_STATE(thrd, newstate); \
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} while (0)
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#endif
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|
/*
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|
* Define the signals to be used for scheduling.
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|
*/
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|
#if defined(_PTHREADS_COMPAT_SCHED)
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#define _ITIMER_SCHED_TIMER ITIMER_VIRTUAL
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#define _SCHED_SIGNAL SIGVTALRM
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|
#else
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#define _ITIMER_SCHED_TIMER ITIMER_PROF
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#define _SCHED_SIGNAL SIGPROF
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#endif
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|
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/*
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* Priority queues.
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*
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* XXX It'd be nice if these were contained in uthread_priority_queue.[ch].
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*/
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typedef struct pq_list {
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TAILQ_HEAD(, pthread) pl_head; /* list of threads at this priority */
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TAILQ_ENTRY(pq_list) pl_link; /* link for queue of priority lists */
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|
int pl_prio; /* the priority of this list */
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int pl_queued; /* is this in the priority queue */
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|
} pq_list_t;
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|
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typedef struct pq_queue {
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TAILQ_HEAD(, pq_list) pq_queue; /* queue of priority lists */
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pq_list_t *pq_lists; /* array of all priority lists */
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int pq_size; /* number of priority lists */
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} pq_queue_t;
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|
|
|
|
/*
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|
* TailQ initialization values.
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|
*/
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#define TAILQ_INITIALIZER { NULL, NULL }
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|
|
/*
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|
* Mutex definitions.
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|
*/
|
|
union pthread_mutex_data {
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|
void *m_ptr;
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|
int m_count;
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|
};
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|
|
struct pthread_mutex {
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|
enum pthread_mutextype m_type;
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|
int m_protocol;
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TAILQ_HEAD(mutex_head, pthread) m_queue;
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|
struct pthread *m_owner;
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|
union pthread_mutex_data m_data;
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|
long m_flags;
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int m_refcount;
|
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|
|
/*
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|
* Used for priority inheritence and protection.
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|
*
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* m_prio - For priority inheritence, the highest active
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* priority (threads locking the mutex inherit
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* this priority). For priority protection, the
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* ceiling priority of this mutex.
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* m_saved_prio - mutex owners inherited priority before
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* taking the mutex, restored when the owner
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* unlocks the mutex.
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*/
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int m_prio;
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int m_saved_prio;
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|
|
/*
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|
* Link for list of all mutexes a thread currently owns.
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*/
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|
TAILQ_ENTRY(pthread_mutex) m_qe;
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|
|
/*
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|
* Lock for accesses to this structure.
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*/
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|
spinlock_t lock;
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};
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|
|
/*
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|
* Flags for mutexes.
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|
*/
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|
#define MUTEX_FLAGS_PRIVATE 0x01
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#define MUTEX_FLAGS_INITED 0x02
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#define MUTEX_FLAGS_BUSY 0x04
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|
|
/*
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|
* Static mutex initialization values.
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|
*/
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#define PTHREAD_MUTEX_STATIC_INITIALIZER \
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{ PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, TAILQ_INITIALIZER, \
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NULL, { NULL }, MUTEX_FLAGS_PRIVATE, 0, 0, 0, TAILQ_INITIALIZER, \
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_SPINLOCK_INITIALIZER }
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|
|
struct pthread_mutex_attr {
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|
enum pthread_mutextype m_type;
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|
int m_protocol;
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|
int m_ceiling;
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long m_flags;
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};
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|
|
/*
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|
* Condition variable definitions.
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|
*/
|
|
enum pthread_cond_type {
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COND_TYPE_FAST,
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COND_TYPE_MAX
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};
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|
|
struct pthread_cond {
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|
enum pthread_cond_type c_type;
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|
TAILQ_HEAD(cond_head, pthread) c_queue;
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pthread_mutex_t c_mutex;
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void *c_data;
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long c_flags;
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int c_seqno;
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|
|
/*
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* Lock for accesses to this structure.
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*/
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|
spinlock_t lock;
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};
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|
|
struct pthread_cond_attr {
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|
enum pthread_cond_type c_type;
|
|
long c_flags;
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};
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|
|
/*
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|
* Flags for condition variables.
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|
*/
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|
#define COND_FLAGS_PRIVATE 0x01
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#define COND_FLAGS_INITED 0x02
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#define COND_FLAGS_BUSY 0x04
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|
|
/*
|
|
* Static cond initialization values.
|
|
*/
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|
#define PTHREAD_COND_STATIC_INITIALIZER \
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{ COND_TYPE_FAST, TAILQ_INITIALIZER, NULL, NULL, \
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0, 0, _SPINLOCK_INITIALIZER }
|
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|
|
/*
|
|
* Semaphore definitions.
|
|
*/
|
|
struct sem {
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|
#define SEM_MAGIC ((u_int32_t) 0x09fa4012)
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|
u_int32_t magic;
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pthread_mutex_t lock;
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|
pthread_cond_t gtzero;
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u_int32_t count;
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|
u_int32_t nwaiters;
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|
};
|
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|
|
/*
|
|
* Cleanup definitions.
|
|
*/
|
|
struct pthread_cleanup {
|
|
struct pthread_cleanup *next;
|
|
void (*routine) ();
|
|
void *routine_arg;
|
|
};
|
|
|
|
struct pthread_attr {
|
|
int sched_policy;
|
|
int sched_inherit;
|
|
int sched_interval;
|
|
int prio;
|
|
int suspend;
|
|
int flags;
|
|
void *arg_attr;
|
|
void (*cleanup_attr) ();
|
|
void *stackaddr_attr;
|
|
size_t stacksize_attr;
|
|
};
|
|
|
|
/*
|
|
* Thread creation state attributes.
|
|
*/
|
|
#define PTHREAD_CREATE_RUNNING 0
|
|
#define PTHREAD_CREATE_SUSPENDED 1
|
|
|
|
/*
|
|
* Additional state for a thread suspended with pthread_suspend_np().
|
|
*/
|
|
enum pthread_susp {
|
|
SUSP_NO, /* Not suspended. */
|
|
SUSP_YES, /* Suspended. */
|
|
SUSP_NOWAIT, /* Suspended, was in a mutex or condition queue. */
|
|
SUSP_MUTEX_WAIT,/* Suspended, still in a mutex queue. */
|
|
SUSP_COND_WAIT /* Suspended, still in a condition queue. */
|
|
};
|
|
|
|
/*
|
|
* Miscellaneous definitions.
|
|
*/
|
|
#define PTHREAD_STACK_DEFAULT 65536
|
|
/*
|
|
* Size of red zone at the end of each stack. In actuality, this "red zone" is
|
|
* merely an unmapped region, except in the case of the initial stack. Since
|
|
* mmap() makes it possible to specify the maximum growth of a MAP_STACK region,
|
|
* an unmapped gap between thread stacks achieves the same effect as explicitly
|
|
* mapped red zones.
|
|
*/
|
|
#define PTHREAD_STACK_GUARD PAGE_SIZE
|
|
|
|
/*
|
|
* Maximum size of initial thread's stack. This perhaps deserves to be larger
|
|
* than the stacks of other threads, since many applications are likely to run
|
|
* almost entirely on this stack.
|
|
*/
|
|
#define PTHREAD_STACK_INITIAL 0x100000
|
|
|
|
/* Size of the scheduler stack: */
|
|
#define SCHED_STACK_SIZE PAGE_SIZE
|
|
|
|
/*
|
|
* Define the different priority ranges. All applications have thread
|
|
* priorities constrained within 0-31. The threads library raises the
|
|
* priority when delivering signals in order to ensure that signal
|
|
* delivery happens (from the POSIX spec) "as soon as possible".
|
|
* In the future, the threads library will also be able to map specific
|
|
* threads into real-time (cooperating) processes or kernel threads.
|
|
* The RT and SIGNAL priorities will be used internally and added to
|
|
* thread base priorities so that the scheduling queue can handle both
|
|
* normal and RT priority threads with and without signal handling.
|
|
*
|
|
* The approach taken is that, within each class, signal delivery
|
|
* always has priority over thread execution.
|
|
*/
|
|
#define PTHREAD_DEFAULT_PRIORITY 15
|
|
#define PTHREAD_MIN_PRIORITY 0
|
|
#define PTHREAD_MAX_PRIORITY 31 /* 0x1F */
|
|
#define PTHREAD_SIGNAL_PRIORITY 32 /* 0x20 */
|
|
#define PTHREAD_RT_PRIORITY 64 /* 0x40 */
|
|
#define PTHREAD_FIRST_PRIORITY PTHREAD_MIN_PRIORITY
|
|
#define PTHREAD_LAST_PRIORITY \
|
|
(PTHREAD_MAX_PRIORITY + PTHREAD_SIGNAL_PRIORITY + PTHREAD_RT_PRIORITY)
|
|
#define PTHREAD_BASE_PRIORITY(prio) ((prio) & PTHREAD_MAX_PRIORITY)
|
|
|
|
/*
|
|
* Clock resolution in microseconds.
|
|
*/
|
|
#define CLOCK_RES_USEC 10000
|
|
|
|
/*
|
|
* Time slice period in microseconds.
|
|
*/
|
|
#define TIMESLICE_USEC 20000
|
|
|
|
/*
|
|
* Define a thread-safe macro to get the current time of day
|
|
* which is updated at regular intervals by the scheduling signal
|
|
* handler.
|
|
*/
|
|
#define GET_CURRENT_TOD(tv) \
|
|
do { \
|
|
tv.tv_sec = _sched_tod.tv_sec; \
|
|
tv.tv_usec = _sched_tod.tv_usec; \
|
|
} while (tv.tv_sec != _sched_tod.tv_sec)
|
|
|
|
|
|
struct pthread_key {
|
|
spinlock_t lock;
|
|
volatile int allocated;
|
|
volatile int count;
|
|
void (*destructor) ();
|
|
};
|
|
|
|
struct pthread_rwlockattr {
|
|
int pshared;
|
|
};
|
|
|
|
struct pthread_rwlock {
|
|
pthread_mutex_t lock; /* monitor lock */
|
|
int state; /* 0 = idle >0 = # of readers -1 = writer */
|
|
pthread_cond_t read_signal;
|
|
pthread_cond_t write_signal;
|
|
int blocked_writers;
|
|
};
|
|
|
|
/*
|
|
* Thread states.
|
|
*/
|
|
enum pthread_state {
|
|
PS_RUNNING,
|
|
PS_SIGTHREAD,
|
|
PS_MUTEX_WAIT,
|
|
PS_COND_WAIT,
|
|
PS_FDLR_WAIT,
|
|
PS_FDLW_WAIT,
|
|
PS_FDR_WAIT,
|
|
PS_FDW_WAIT,
|
|
PS_FILE_WAIT,
|
|
PS_POLL_WAIT,
|
|
PS_SELECT_WAIT,
|
|
PS_SLEEP_WAIT,
|
|
PS_WAIT_WAIT,
|
|
PS_SIGSUSPEND,
|
|
PS_SIGWAIT,
|
|
PS_SPINBLOCK,
|
|
PS_JOIN,
|
|
PS_SUSPENDED,
|
|
PS_DEAD,
|
|
PS_DEADLOCK,
|
|
PS_STATE_MAX
|
|
};
|
|
|
|
|
|
/*
|
|
* File descriptor locking definitions.
|
|
*/
|
|
#define FD_READ 0x1
|
|
#define FD_WRITE 0x2
|
|
#define FD_RDWR (FD_READ | FD_WRITE)
|
|
|
|
/*
|
|
* File descriptor table structure.
|
|
*/
|
|
struct fd_table_entry {
|
|
/*
|
|
* Lock for accesses to this file descriptor table
|
|
* entry. This is passed to _spinlock() to provide atomic
|
|
* access to this structure. It does *not* represent the
|
|
* state of the lock on the file descriptor.
|
|
*/
|
|
spinlock_t lock;
|
|
TAILQ_HEAD(, pthread) r_queue; /* Read queue. */
|
|
TAILQ_HEAD(, pthread) w_queue; /* Write queue. */
|
|
struct pthread *r_owner; /* Ptr to thread owning read lock. */
|
|
struct pthread *w_owner; /* Ptr to thread owning write lock. */
|
|
char *r_fname; /* Ptr to read lock source file name */
|
|
int r_lineno; /* Read lock source line number. */
|
|
char *w_fname; /* Ptr to write lock source file name */
|
|
int w_lineno; /* Write lock source line number. */
|
|
int r_lockcount; /* Count for FILE read locks. */
|
|
int w_lockcount; /* Count for FILE write locks. */
|
|
int flags; /* Flags used in open. */
|
|
};
|
|
|
|
struct pthread_poll_data {
|
|
int nfds;
|
|
struct pollfd *fds;
|
|
};
|
|
|
|
union pthread_wait_data {
|
|
pthread_mutex_t mutex;
|
|
pthread_cond_t cond;
|
|
const sigset_t *sigwait; /* Waiting on a signal in sigwait */
|
|
struct {
|
|
short fd; /* Used when thread waiting on fd */
|
|
short branch; /* Line number, for debugging. */
|
|
char *fname; /* Source file name for debugging.*/
|
|
} fd;
|
|
FILE *fp;
|
|
struct pthread_poll_data *poll_data;
|
|
spinlock_t *spinlock;
|
|
struct pthread *thread;
|
|
};
|
|
|
|
/*
|
|
* Define a continuation routine that can be used to perform a
|
|
* transfer of control:
|
|
*/
|
|
typedef void (*thread_continuation_t) (void *);
|
|
|
|
struct pthread_signal_frame;
|
|
|
|
struct pthread_state_data {
|
|
struct pthread_signal_frame *psd_curframe;
|
|
sigset_t psd_sigmask;
|
|
struct timespec psd_wakeup_time;
|
|
union pthread_wait_data psd_wait_data;
|
|
enum pthread_state psd_state;
|
|
int psd_flags;
|
|
int psd_interrupted;
|
|
int psd_longjmp_val;
|
|
int psd_sigmask_seqno;
|
|
int psd_signo;
|
|
int psd_sig_defer_count;
|
|
/* XXX - What about thread->timeout and/or thread->error? */
|
|
};
|
|
|
|
|
|
/*
|
|
* Normally thread contexts are stored as jmp_bufs via _setjmp()/_longjmp(),
|
|
* but they may also be sigjmp_buf and ucontext_t. When a thread is
|
|
* interrupted by a signal, it's context is saved as a ucontext_t. An
|
|
* application is also free to use [_]longjmp()/[_]siglongjmp() to jump
|
|
* between contexts within the same thread. Future support will also
|
|
* include setcontext()/getcontext().
|
|
*
|
|
* Define an enumerated type that can identify the 4 different context
|
|
* types.
|
|
*/
|
|
typedef enum {
|
|
CTX_JB_NOSIG, /* context is jmp_buf without saved sigset */
|
|
CTX_JB, /* context is jmp_buf (with saved sigset) */
|
|
CTX_SJB, /* context is sigjmp_buf (with saved sigset) */
|
|
CTX_UC /* context is ucontext_t (with saved sigset) */
|
|
} thread_context_t;
|
|
|
|
/*
|
|
* There are 2 basic contexts that a frame may contain at any
|
|
* one time:
|
|
*
|
|
* o ctx - The context that the thread should return to after normal
|
|
* completion of the signal handler.
|
|
* o sig_jb - The context just before the signal handler is invoked.
|
|
* Attempts at abnormal returns from user supplied signal handlers
|
|
* will return back to the signal context to perform any necessary
|
|
* cleanup.
|
|
*/
|
|
struct pthread_signal_frame {
|
|
/*
|
|
* This stores the threads state before the signal.
|
|
*/
|
|
struct pthread_state_data saved_state;
|
|
|
|
/*
|
|
* Threads return context; ctxtype identifies the type of context.
|
|
* For signal frame 0, these point to the context storage area
|
|
* within the pthread structure. When handling signals (frame > 0),
|
|
* these point to a context storage area that is allocated off the
|
|
* threads stack.
|
|
*/
|
|
union {
|
|
jmp_buf jb;
|
|
sigjmp_buf sigjb;
|
|
ucontext_t uc;
|
|
} ctx;
|
|
thread_context_t ctxtype;
|
|
int longjmp_val;
|
|
int signo; /* signal, arg 1 to sighandler */
|
|
int sig_has_args; /* use signal args if true */
|
|
ucontext_t uc;
|
|
siginfo_t siginfo;
|
|
};
|
|
|
|
/*
|
|
* Thread structure.
|
|
*/
|
|
struct pthread {
|
|
/*
|
|
* Magic value to help recognize a valid thread structure
|
|
* from an invalid one:
|
|
*/
|
|
#define PTHREAD_MAGIC ((u_int32_t) 0xd09ba115)
|
|
u_int32_t magic;
|
|
char *name;
|
|
u_int64_t uniqueid; /* for gdb */
|
|
|
|
/*
|
|
* Lock for accesses to this thread structure.
|
|
*/
|
|
spinlock_t lock;
|
|
|
|
/* Queue entry for list of all threads: */
|
|
TAILQ_ENTRY(pthread) tle;
|
|
|
|
/* Queue entry for list of dead threads: */
|
|
TAILQ_ENTRY(pthread) dle;
|
|
|
|
/*
|
|
* Thread start routine, argument, stack pointer and thread
|
|
* attributes.
|
|
*/
|
|
void *(*start_routine)(void *);
|
|
void *arg;
|
|
void *stack;
|
|
struct pthread_attr attr;
|
|
|
|
/*
|
|
* Threads return context; ctxtype identifies the type of context.
|
|
*/
|
|
union {
|
|
jmp_buf jb;
|
|
sigjmp_buf sigjb;
|
|
ucontext_t uc;
|
|
} ctx;
|
|
thread_context_t ctxtype;
|
|
int longjmp_val;
|
|
|
|
/*
|
|
* Used for tracking delivery of signal handlers.
|
|
*/
|
|
struct pthread_signal_frame *curframe;
|
|
|
|
/*
|
|
* Cancelability flags - the lower 2 bits are used by cancel
|
|
* definitions in pthread.h
|
|
*/
|
|
#define PTHREAD_AT_CANCEL_POINT 0x0004
|
|
#define PTHREAD_CANCELLING 0x0008
|
|
#define PTHREAD_CANCEL_NEEDED 0x0010
|
|
int cancelflags;
|
|
|
|
enum pthread_susp suspended;
|
|
|
|
thread_continuation_t continuation;
|
|
|
|
/*
|
|
* Current signal mask and pending signals.
|
|
*/
|
|
sigset_t sigmask;
|
|
sigset_t sigpend;
|
|
int sigmask_seqno;
|
|
int check_pending;
|
|
|
|
/* Thread state: */
|
|
enum pthread_state state;
|
|
|
|
/* Scheduling clock when this thread was last made active. */
|
|
long last_active;
|
|
|
|
/* Scheduling clock when this thread was last made inactive. */
|
|
long last_inactive;
|
|
|
|
/*
|
|
* Number of microseconds accumulated by this thread when
|
|
* time slicing is active.
|
|
*/
|
|
long slice_usec;
|
|
|
|
/*
|
|
* Time to wake up thread. This is used for sleeping threads and
|
|
* for any operation which may time out (such as select).
|
|
*/
|
|
struct timespec wakeup_time;
|
|
|
|
/* TRUE if operation has timed out. */
|
|
int timeout;
|
|
|
|
/*
|
|
* Error variable used instead of errno. The function __error()
|
|
* returns a pointer to this.
|
|
*/
|
|
int error;
|
|
|
|
/* Join queue head and link for waiting threads: */
|
|
TAILQ_HEAD(join_head, pthread) join_queue;
|
|
|
|
/*
|
|
* The current thread can belong to only one scheduling queue at
|
|
* a time (ready or waiting queue). It can also belong to:
|
|
*
|
|
* o A queue of threads waiting for a mutex
|
|
* o A queue of threads waiting for a condition variable
|
|
* o A queue of threads waiting for another thread to terminate
|
|
* (the join queue above)
|
|
* o A queue of threads waiting for a file descriptor lock
|
|
* o A queue of threads needing work done by the kernel thread
|
|
* (waiting for a spinlock or file I/O)
|
|
*
|
|
* It is possible for a thread to belong to more than one of the
|
|
* above queues if it is handling a signal. A thread may only
|
|
* enter a mutex, condition variable, or join queue when it is
|
|
* not being called from a signal handler. If a thread is a
|
|
* member of one of these queues when a signal handler is invoked,
|
|
* it must remain in the queue. For this reason, the links for
|
|
* these queues must not be (re)used for other queues.
|
|
*
|
|
* Use pqe for the scheduling queue link (both ready and waiting),
|
|
* sqe for synchronization (mutex, condition variable, and join)
|
|
* queue links, and qe for all other links.
|
|
*/
|
|
TAILQ_ENTRY(pthread) pqe; /* priority queue link */
|
|
TAILQ_ENTRY(pthread) sqe; /* synchronization queue link */
|
|
TAILQ_ENTRY(pthread) qe; /* all other queues link */
|
|
|
|
/* Wait data. */
|
|
union pthread_wait_data data;
|
|
|
|
/*
|
|
* Allocated for converting select into poll.
|
|
*/
|
|
struct pthread_poll_data poll_data;
|
|
|
|
/*
|
|
* Set to TRUE if a blocking operation was
|
|
* interrupted by a signal:
|
|
*/
|
|
int interrupted;
|
|
|
|
/* Signal number when in state PS_SIGWAIT: */
|
|
int signo;
|
|
|
|
/*
|
|
* Set to non-zero when this thread has deferred signals.
|
|
* We allow for recursive deferral.
|
|
*/
|
|
int sig_defer_count;
|
|
|
|
/*
|
|
* Set to TRUE if this thread should yield after undeferring
|
|
* signals.
|
|
*/
|
|
int yield_on_sig_undefer;
|
|
|
|
/* Miscellaneous flags; only set with signals deferred. */
|
|
int flags;
|
|
#define PTHREAD_FLAGS_PRIVATE 0x0001
|
|
#define PTHREAD_EXITING 0x0002
|
|
#define PTHREAD_FLAGS_IN_WAITQ 0x0004 /* in waiting queue using pqe link */
|
|
#define PTHREAD_FLAGS_IN_PRIOQ 0x0008 /* in priority queue using pqe link */
|
|
#define PTHREAD_FLAGS_IN_WORKQ 0x0010 /* in work queue using qe link */
|
|
#define PTHREAD_FLAGS_IN_FILEQ 0x0020 /* in file lock queue using qe link */
|
|
#define PTHREAD_FLAGS_IN_FDQ 0x0040 /* in fd lock queue using qe link */
|
|
#define PTHREAD_FLAGS_IN_CONDQ 0x0080 /* in condition queue using sqe link*/
|
|
#define PTHREAD_FLAGS_IN_MUTEXQ 0x0100 /* in mutex queue using sqe link */
|
|
#define PTHREAD_FLAGS_IN_JOINQ 0x0200 /* in join queue using sqe link */
|
|
#define PTHREAD_FLAGS_TRACE 0x0400 /* for debugging purposes */
|
|
#define PTHREAD_FLAGS_IN_SYNCQ \
|
|
(PTHREAD_FLAGS_IN_CONDQ | PTHREAD_FLAGS_IN_MUTEXQ | PTHREAD_FLAGS_IN_JOINQ)
|
|
|
|
/*
|
|
* Base priority is the user setable and retrievable priority
|
|
* of the thread. It is only affected by explicit calls to
|
|
* set thread priority and upon thread creation via a thread
|
|
* attribute or default priority.
|
|
*/
|
|
char base_priority;
|
|
|
|
/*
|
|
* Inherited priority is the priority a thread inherits by
|
|
* taking a priority inheritence or protection mutex. It
|
|
* is not affected by base priority changes. Inherited
|
|
* priority defaults to and remains 0 until a mutex is taken
|
|
* that is being waited on by any other thread whose priority
|
|
* is non-zero.
|
|
*/
|
|
char inherited_priority;
|
|
|
|
/*
|
|
* Active priority is always the maximum of the threads base
|
|
* priority and inherited priority. When there is a change
|
|
* in either the base or inherited priority, the active
|
|
* priority must be recalculated.
|
|
*/
|
|
char active_priority;
|
|
|
|
/* Number of priority ceiling or protection mutexes owned. */
|
|
int priority_mutex_count;
|
|
|
|
/*
|
|
* Queue of currently owned mutexes.
|
|
*/
|
|
TAILQ_HEAD(, pthread_mutex) mutexq;
|
|
|
|
void *ret;
|
|
const void **specific_data;
|
|
int specific_data_count;
|
|
|
|
/* Cleanup handlers Link List */
|
|
struct pthread_cleanup *cleanup;
|
|
char *fname; /* Ptr to source file name */
|
|
int lineno; /* Source line number. */
|
|
};
|
|
|
|
/* Spare thread stack. */
|
|
struct stack {
|
|
SLIST_ENTRY(stack) qe; /* Queue entry for this stack. */
|
|
};
|
|
|
|
/*
|
|
* Global variables for the uthread kernel.
|
|
*/
|
|
|
|
/* Kernel thread structure used when there are no running threads: */
|
|
SCLASS struct pthread _thread_kern_thread;
|
|
|
|
/* Ptr to the thread structure for the running thread: */
|
|
SCLASS struct pthread * volatile _thread_run
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= &_thread_kern_thread;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/* Ptr to the thread structure for the last user thread to run: */
|
|
SCLASS struct pthread * volatile _last_user_thread
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= &_thread_kern_thread;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/*
|
|
* Ptr to the thread running in single-threaded mode or NULL if
|
|
* running multi-threaded (default POSIX behaviour).
|
|
*/
|
|
SCLASS struct pthread * volatile _thread_single
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= NULL;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/* List of all threads: */
|
|
SCLASS TAILQ_HEAD(, pthread) _thread_list
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= TAILQ_HEAD_INITIALIZER(_thread_list);
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/*
|
|
* Array of kernel pipe file descriptors that are used to ensure that
|
|
* no signals are missed in calls to _select.
|
|
*/
|
|
SCLASS int _thread_kern_pipe[2]
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= {
|
|
-1,
|
|
-1
|
|
};
|
|
#else
|
|
;
|
|
#endif
|
|
SCLASS int volatile _queue_signals
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= 0;
|
|
#else
|
|
;
|
|
#endif
|
|
SCLASS int _thread_kern_in_sched
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= 0;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
SCLASS int _sig_in_handler
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= 0;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/* Time of day at last scheduling timer signal: */
|
|
SCLASS struct timeval volatile _sched_tod
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= { 0, 0 };
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/*
|
|
* Current scheduling timer ticks; used as resource usage.
|
|
*/
|
|
SCLASS unsigned int volatile _sched_ticks
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= 0;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/* Dead threads: */
|
|
SCLASS TAILQ_HEAD(, pthread) _dead_list
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= TAILQ_HEAD_INITIALIZER(_dead_list);
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/* Initial thread: */
|
|
SCLASS struct pthread *_thread_initial
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= NULL;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/* Default thread attributes: */
|
|
SCLASS struct pthread_attr pthread_attr_default
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= { SCHED_RR, 0, TIMESLICE_USEC, PTHREAD_DEFAULT_PRIORITY, PTHREAD_CREATE_RUNNING,
|
|
PTHREAD_CREATE_JOINABLE, NULL, NULL, NULL, PTHREAD_STACK_DEFAULT };
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/* Default mutex attributes: */
|
|
SCLASS struct pthread_mutex_attr pthread_mutexattr_default
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= { PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, 0, 0 };
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/* Default condition variable attributes: */
|
|
SCLASS struct pthread_cond_attr pthread_condattr_default
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= { COND_TYPE_FAST, 0 };
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/*
|
|
* Standard I/O file descriptors need special flag treatment since
|
|
* setting one to non-blocking does all on *BSD. Sigh. This array
|
|
* is used to store the initial flag settings.
|
|
*/
|
|
SCLASS int _pthread_stdio_flags[3];
|
|
|
|
/* File table information: */
|
|
SCLASS struct fd_table_entry **_thread_fd_table
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= NULL;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/* Table for polling file descriptors: */
|
|
SCLASS struct pollfd *_thread_pfd_table
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= NULL;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
SCLASS const int dtablecount
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= 4096/sizeof(struct fd_table_entry);
|
|
#else
|
|
;
|
|
#endif
|
|
SCLASS int _thread_dtablesize /* Descriptor table size. */
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= 0;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
SCLASS int _clock_res_usec /* Clock resolution in usec. */
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= CLOCK_RES_USEC;
|
|
#else
|
|
;
|
|
#endif
|
|
|
|
/* Garbage collector mutex and condition variable. */
|
|
SCLASS pthread_mutex_t _gc_mutex
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= NULL
|
|
#endif
|
|
;
|
|
SCLASS pthread_cond_t _gc_cond
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= NULL
|
|
#endif
|
|
;
|
|
|
|
/*
|
|
* Array of signal actions for this process.
|
|
*/
|
|
SCLASS struct sigaction _thread_sigact[NSIG];
|
|
|
|
/*
|
|
* Array of counts of dummy handlers for SIG_DFL signals. This is used to
|
|
* assure that there is always a dummy signal handler installed while there is a
|
|
* thread sigwait()ing on the corresponding signal.
|
|
*/
|
|
SCLASS int _thread_dfl_count[NSIG];
|
|
|
|
/*
|
|
* Pending signals and mask for this process:
|
|
*/
|
|
SCLASS sigset_t _process_sigpending;
|
|
SCLASS sigset_t _process_sigmask
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= { {0, 0, 0, 0} }
|
|
#endif
|
|
;
|
|
|
|
/*
|
|
* Scheduling queues:
|
|
*/
|
|
SCLASS pq_queue_t _readyq;
|
|
SCLASS TAILQ_HEAD(, pthread) _waitingq;
|
|
|
|
/*
|
|
* Work queue:
|
|
*/
|
|
SCLASS TAILQ_HEAD(, pthread) _workq;
|
|
|
|
/* Tracks the number of threads blocked while waiting for a spinlock. */
|
|
SCLASS volatile int _spinblock_count
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= 0
|
|
#endif
|
|
;
|
|
|
|
/* Used to maintain pending and active signals: */
|
|
struct sigstatus {
|
|
int pending; /* Is this a pending signal? */
|
|
int blocked; /*
|
|
* A handler is currently active for
|
|
* this signal; ignore subsequent
|
|
* signals until the handler is done.
|
|
*/
|
|
int signo; /* arg 1 to signal handler */
|
|
siginfo_t siginfo; /* arg 2 to signal handler */
|
|
ucontext_t uc; /* arg 3 to signal handler */
|
|
};
|
|
|
|
SCLASS struct sigstatus _thread_sigq[NSIG];
|
|
|
|
/* Indicates that the signal queue needs to be checked. */
|
|
SCLASS volatile int _sigq_check_reqd
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= 0
|
|
#endif
|
|
;
|
|
|
|
/* The signal stack. */
|
|
SCLASS struct sigaltstack _thread_sigstack;
|
|
|
|
/* Thread switch hook. */
|
|
SCLASS pthread_switch_routine_t _sched_switch_hook
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= NULL
|
|
#endif
|
|
;
|
|
|
|
/*
|
|
* Spare stack queue. Stacks of default size are cached in order to reduce
|
|
* thread creation time. Spare stacks are used in LIFO order to increase cache
|
|
* locality.
|
|
*/
|
|
SCLASS SLIST_HEAD(, stack) _stackq;
|
|
|
|
/*
|
|
* Base address of next unallocated default-size {stack, red zone}. Stacks are
|
|
* allocated contiguously, starting below the bottom of the main stack. When a
|
|
* new stack is created, a red zone is created (actually, the red zone is simply
|
|
* left unmapped) below the bottom of the stack, such that the stack will not be
|
|
* able to grow all the way to the top of the next stack. This isn't
|
|
* fool-proof. It is possible for a stack to grow by a large amount, such that
|
|
* it grows into the next stack, and as long as the memory within the red zone
|
|
* is never accessed, nothing will prevent one thread stack from trouncing all
|
|
* over the next.
|
|
*/
|
|
SCLASS void * _next_stack
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
/* main stack top - main stack size - stack size - (red zone + main stack red zone) */
|
|
= (void *) USRSTACK - PTHREAD_STACK_INITIAL - PTHREAD_STACK_DEFAULT - (2 * PTHREAD_STACK_GUARD)
|
|
#endif
|
|
;
|
|
|
|
/*
|
|
* Declare the kernel scheduler jump buffer and stack:
|
|
*/
|
|
SCLASS jmp_buf _thread_kern_sched_jb;
|
|
|
|
SCLASS void * _thread_kern_sched_stack
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= NULL
|
|
#endif
|
|
;
|
|
|
|
|
|
/* Used for _PTHREADS_INVARIANTS checking. */
|
|
SCLASS int _thread_kern_new_state
|
|
#ifdef GLOBAL_PTHREAD_PRIVATE
|
|
= 0
|
|
#endif
|
|
;
|
|
|
|
/* Undefine the storage class specifier: */
|
|
#undef SCLASS
|
|
|
|
#ifdef _LOCK_DEBUG
|
|
#define _FD_LOCK(_fd,_type,_ts) _thread_fd_lock_debug(_fd, _type, \
|
|
_ts, __FILE__, __LINE__)
|
|
#define _FD_UNLOCK(_fd,_type) _thread_fd_unlock_debug(_fd, _type, \
|
|
__FILE__, __LINE__)
|
|
#else
|
|
#define _FD_LOCK(_fd,_type,_ts) _thread_fd_lock(_fd, _type, _ts)
|
|
#define _FD_UNLOCK(_fd,_type) _thread_fd_unlock(_fd, _type)
|
|
#endif
|
|
|
|
/*
|
|
* Function prototype definitions.
|
|
*/
|
|
__BEGIN_DECLS
|
|
char *__ttyname_basic(int);
|
|
char *__ttyname_r_basic(int, char *, size_t);
|
|
char *ttyname_r(int, char *, size_t);
|
|
void _cond_wait_backout(pthread_t);
|
|
void _fd_lock_backout(pthread_t);
|
|
int _find_dead_thread(pthread_t);
|
|
int _find_thread(pthread_t);
|
|
void _flockfile_backout(pthread_t);
|
|
void _funlock_owned(pthread_t);
|
|
void _join_backout(pthread_t);
|
|
int _thread_create(pthread_t *,const pthread_attr_t *,void *(*start_routine)(void *),void *,pthread_t);
|
|
int _thread_fd_lock(int, int, struct timespec *);
|
|
int _thread_fd_lock_debug(int, int, struct timespec *,char *fname,int lineno);
|
|
int _mutex_cv_lock(pthread_mutex_t *);
|
|
int _mutex_cv_unlock(pthread_mutex_t *);
|
|
void _mutex_lock_backout(pthread_t);
|
|
void _mutex_notify_priochange(pthread_t);
|
|
int _mutex_reinit(pthread_mutex_t *);
|
|
void _mutex_unlock_private(pthread_t);
|
|
int _cond_reinit(pthread_cond_t *);
|
|
int _pq_alloc(struct pq_queue *, int, int);
|
|
int _pq_init(struct pq_queue *);
|
|
void _pq_remove(struct pq_queue *pq, struct pthread *);
|
|
void _pq_insert_head(struct pq_queue *pq, struct pthread *);
|
|
void _pq_insert_tail(struct pq_queue *pq, struct pthread *);
|
|
struct pthread *_pq_first(struct pq_queue *pq);
|
|
void _waitq_insert(pthread_t pthread);
|
|
void _waitq_remove(pthread_t pthread);
|
|
#if defined(_PTHREADS_INVARIANTS)
|
|
void _waitq_setactive(void);
|
|
void _waitq_clearactive(void);
|
|
#endif
|
|
void _thread_exit(char *, int, char *);
|
|
void _thread_exit_cleanup(void);
|
|
void _thread_fd_unlock(int, int);
|
|
void _thread_fd_unlock_debug(int, int, char *, int);
|
|
void _thread_fd_unlock_owned(pthread_t);
|
|
void *_thread_cleanup(pthread_t);
|
|
void _thread_cleanupspecific(void);
|
|
void _thread_dump_info(void);
|
|
void _thread_init(void);
|
|
void _thread_kern_sched(ucontext_t *);
|
|
void _thread_kern_scheduler(void);
|
|
void _thread_kern_sched_frame(struct pthread_signal_frame *psf);
|
|
void _thread_kern_sched_sig(void);
|
|
void _thread_kern_sched_state(enum pthread_state, char *fname, int lineno);
|
|
void _thread_kern_sched_state_unlock(enum pthread_state state,
|
|
spinlock_t *lock, char *fname, int lineno);
|
|
void _thread_kern_set_timeout(const struct timespec *);
|
|
void _thread_kern_sig_defer(void);
|
|
void _thread_kern_sig_undefer(void);
|
|
void _thread_sig_handler(int, siginfo_t *, ucontext_t *);
|
|
void _thread_sig_check_pending(pthread_t pthread);
|
|
void _thread_sig_handle_pending(void);
|
|
void _thread_sig_send(pthread_t pthread, int sig);
|
|
void _thread_sig_wrapper(void);
|
|
void _thread_sigframe_restore(pthread_t thread, struct pthread_signal_frame *psf);
|
|
void _thread_start(void);
|
|
void _thread_seterrno(pthread_t, int);
|
|
int _thread_fd_table_init(int fd);
|
|
pthread_addr_t _thread_gc(pthread_addr_t);
|
|
void _thread_enter_cancellation_point(void);
|
|
void _thread_leave_cancellation_point(void);
|
|
void _thread_cancellation_point(void);
|
|
|
|
/* #include <signal.h> */
|
|
int _thread_sys_sigaction(int, const struct sigaction *, struct sigaction *);
|
|
int _thread_sys_sigpending(sigset_t *);
|
|
int _thread_sys_sigprocmask(int, const sigset_t *, sigset_t *);
|
|
int _thread_sys_sigsuspend(const sigset_t *);
|
|
int _thread_sys_siginterrupt(int, int);
|
|
int _thread_sys_sigpause(int);
|
|
int _thread_sys_sigreturn(ucontext_t *);
|
|
int _thread_sys_sigaltstack(const struct sigaltstack *, struct sigaltstack *);
|
|
int _thread_sys_sigstack(const struct sigstack *, struct sigstack *);
|
|
int _thread_sys_sigvec(int, struct sigvec *, struct sigvec *);
|
|
void _thread_sys_psignal(unsigned int, const char *);
|
|
void (*_thread_sys_signal(int, void (*)(int)))(int);
|
|
|
|
/* #include <sys/stat.h> */
|
|
#ifdef _SYS_STAT_H_
|
|
int _thread_sys_fchmod(int, mode_t);
|
|
int _thread_sys_fstat(int, struct stat *);
|
|
int _thread_sys_fchflags(int, u_long);
|
|
#endif
|
|
|
|
/* #include <sys/mount.h> */
|
|
#ifdef _SYS_MOUNT_H_
|
|
int _thread_sys_fstatfs(int, struct statfs *);
|
|
#endif
|
|
int _thread_sys_pipe(int *);
|
|
|
|
/* #include <sys/socket.h> */
|
|
#ifdef _SYS_SOCKET_H_
|
|
int _thread_sys_accept(int, struct sockaddr *, int *);
|
|
int _thread_sys_bind(int, const struct sockaddr *, int);
|
|
int _thread_sys_connect(int, const struct sockaddr *, int);
|
|
int _thread_sys_getpeername(int, struct sockaddr *, int *);
|
|
int _thread_sys_getsockname(int, struct sockaddr *, int *);
|
|
int _thread_sys_getsockopt(int, int, int, void *, int *);
|
|
int _thread_sys_listen(int, int);
|
|
int _thread_sys_setsockopt(int, int, int, const void *, int);
|
|
int _thread_sys_shutdown(int, int);
|
|
int _thread_sys_socket(int, int, int);
|
|
int _thread_sys_socketpair(int, int, int, int *);
|
|
ssize_t _thread_sys_recv(int, void *, size_t, int);
|
|
ssize_t _thread_sys_recvfrom(int, void *, size_t, int, struct sockaddr *, int *);
|
|
ssize_t _thread_sys_recvmsg(int, struct msghdr *, int);
|
|
ssize_t _thread_sys_send(int, const void *, size_t, int);
|
|
ssize_t _thread_sys_sendmsg(int, const struct msghdr *, int);
|
|
ssize_t _thread_sys_sendto(int, const void *,size_t, int, const struct sockaddr *, int);
|
|
#endif
|
|
|
|
/* #include <stdio.h> */
|
|
#ifdef _STDIO_H_
|
|
FILE *_thread_sys_fdopen(int, const char *);
|
|
FILE *_thread_sys_fopen(const char *, const char *);
|
|
FILE *_thread_sys_freopen(const char *, const char *, FILE *);
|
|
FILE *_thread_sys_popen(const char *, const char *);
|
|
FILE *_thread_sys_tmpfile(void);
|
|
char *_thread_sys_ctermid(char *);
|
|
char *_thread_sys_cuserid(char *);
|
|
char *_thread_sys_fgetln(FILE *, size_t *);
|
|
char *_thread_sys_fgets(char *, int, FILE *);
|
|
char *_thread_sys_gets(char *);
|
|
char *_thread_sys_tempnam(const char *, const char *);
|
|
char *_thread_sys_tmpnam(char *);
|
|
int _thread_sys_fclose(FILE *);
|
|
int _thread_sys_feof(FILE *);
|
|
int _thread_sys_ferror(FILE *);
|
|
int _thread_sys_fflush(FILE *);
|
|
int _thread_sys_fgetc(FILE *);
|
|
int _thread_sys_fgetpos(FILE *, fpos_t *);
|
|
int _thread_sys_fileno(FILE *);
|
|
int _thread_sys_fprintf(FILE *, const char *, ...);
|
|
int _thread_sys_fpurge(FILE *);
|
|
int _thread_sys_fputc(int, FILE *);
|
|
int _thread_sys_fputs(const char *, FILE *);
|
|
int _thread_sys_fscanf(FILE *, const char *, ...);
|
|
int _thread_sys_fseek(FILE *, long, int);
|
|
int _thread_sys_fsetpos(FILE *, const fpos_t *);
|
|
int _thread_sys_getc(FILE *);
|
|
int _thread_sys_getchar(void);
|
|
int _thread_sys_getw(FILE *);
|
|
int _thread_sys_pclose(FILE *);
|
|
int _thread_sys_printf(const char *, ...);
|
|
int _thread_sys_putc(int, FILE *);
|
|
int _thread_sys_putchar(int);
|
|
int _thread_sys_puts(const char *);
|
|
int _thread_sys_putw(int, FILE *);
|
|
int _thread_sys_remove(const char *);
|
|
int _thread_sys_rename (const char *, const char *);
|
|
int _thread_sys_scanf(const char *, ...);
|
|
int _thread_sys_setlinebuf(FILE *);
|
|
int _thread_sys_setvbuf(FILE *, char *, int, size_t);
|
|
int _thread_sys_snprintf(char *, size_t, const char *, ...);
|
|
int _thread_sys_sprintf(char *, const char *, ...);
|
|
int _thread_sys_sscanf(const char *, const char *, ...);
|
|
int _thread_sys_ungetc(int, FILE *);
|
|
int _thread_sys_vfprintf(FILE *, const char *, _BSD_VA_LIST_);
|
|
int _thread_sys_vprintf(const char *, _BSD_VA_LIST_);
|
|
int _thread_sys_vscanf(const char *, _BSD_VA_LIST_);
|
|
int _thread_sys_vsnprintf(char *, size_t, const char *, _BSD_VA_LIST_);
|
|
int _thread_sys_vsprintf(char *, const char *, _BSD_VA_LIST_);
|
|
int _thread_sys_vsscanf(const char *, const char *, _BSD_VA_LIST_);
|
|
long _thread_sys_ftell(FILE *);
|
|
size_t _thread_sys_fread(void *, size_t, size_t, FILE *);
|
|
size_t _thread_sys_fwrite(const void *, size_t, size_t, FILE *);
|
|
void _thread_sys_clearerr(FILE *);
|
|
void _thread_sys_perror(const char *);
|
|
void _thread_sys_rewind(FILE *);
|
|
void _thread_sys_setbuf(FILE *, char *);
|
|
void _thread_sys_setbuffer(FILE *, char *, int);
|
|
#endif
|
|
|
|
/* #include <unistd.h> */
|
|
#ifdef _UNISTD_H_
|
|
char *_thread_sys_ttyname(int);
|
|
int _thread_sys_close(int);
|
|
int _thread_sys_dup(int);
|
|
int _thread_sys_dup2(int, int);
|
|
int _thread_sys_exect(const char *, char * const *, char * const *);
|
|
int _thread_sys_execve(const char *, char * const *, char * const *);
|
|
int _thread_sys_fchdir(int);
|
|
int _thread_sys_fchown(int, uid_t, gid_t);
|
|
int _thread_sys_fsync(int);
|
|
int _thread_sys_ftruncate(int, off_t);
|
|
int _thread_sys_pause(void);
|
|
int _thread_sys_pipe(int *);
|
|
int _thread_sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
|
|
long _thread_sys_fpathconf(int, int);
|
|
off_t _thread_sys_lseek(int, off_t, int);
|
|
pid_t _thread_sys_fork(void);
|
|
pid_t _thread_sys_tcgetpgrp(int);
|
|
ssize_t _thread_sys_read(int, void *, size_t);
|
|
ssize_t _thread_sys_write(int, const void *, size_t);
|
|
void _thread_sys__exit(int);
|
|
#endif
|
|
|
|
/* #include <fcntl.h> */
|
|
#ifdef _SYS_FCNTL_H_
|
|
int _thread_sys_creat(const char *, mode_t);
|
|
int _thread_sys_fcntl(int, int, ...);
|
|
int _thread_sys_flock(int, int);
|
|
int _thread_sys_open(const char *, int, ...);
|
|
#endif
|
|
|
|
/* #include <sys/ioctl.h> */
|
|
#ifdef _SYS_IOCTL_H_
|
|
int _thread_sys_ioctl(int, unsigned long, ...);
|
|
#endif
|
|
|
|
/* #include <dirent.h> */
|
|
#ifdef _DIRENT_H_
|
|
DIR *___thread_sys_opendir2(const char *, int);
|
|
DIR *_thread_sys_opendir(const char *);
|
|
int _thread_sys_alphasort(const void *, const void *);
|
|
int _thread_sys_scandir(const char *, struct dirent ***,
|
|
int (*)(struct dirent *), int (*)(const void *, const void *));
|
|
int _thread_sys_closedir(DIR *);
|
|
int _thread_sys_getdirentries(int, char *, int, long *);
|
|
long _thread_sys_telldir(const DIR *);
|
|
struct dirent *_thread_sys_readdir(DIR *);
|
|
void _thread_sys_rewinddir(DIR *);
|
|
void _thread_sys_seekdir(DIR *, long);
|
|
#endif
|
|
|
|
/* #include <sys/uio.h> */
|
|
#ifdef _SYS_UIO_H_
|
|
ssize_t _thread_sys_readv(int, const struct iovec *, int);
|
|
ssize_t _thread_sys_writev(int, const struct iovec *, int);
|
|
#endif
|
|
|
|
/* #include <sys/wait.h> */
|
|
#ifdef WNOHANG
|
|
pid_t _thread_sys_wait(int *);
|
|
pid_t _thread_sys_waitpid(pid_t, int *, int);
|
|
pid_t _thread_sys_wait3(int *, int, struct rusage *);
|
|
pid_t _thread_sys_wait4(pid_t, int *, int, struct rusage *);
|
|
#endif
|
|
|
|
/* #include <poll.h> */
|
|
#ifdef _SYS_POLL_H_
|
|
int _thread_sys_poll(struct pollfd *, unsigned, int);
|
|
#endif
|
|
|
|
/* #include <sys/mman.h> */
|
|
#ifdef _SYS_MMAN_H_
|
|
int _thread_sys_msync(void *, size_t, int);
|
|
#endif
|
|
|
|
/* #include <setjmp.h> */
|
|
#ifdef _SETJMP_H_
|
|
extern void __siglongjmp(sigjmp_buf, int) __dead2;
|
|
extern void __longjmp(jmp_buf, int) __dead2;
|
|
extern void ___longjmp(jmp_buf, int) __dead2;
|
|
#endif
|
|
__END_DECLS
|
|
|
|
#endif /* !_PTHREAD_PRIVATE_H */
|