Commit Graph

48 Commits

Author SHA1 Message Date
David Xu
d99f6dac14 - Remove variable _thr_scope_system, all threads are system scope.
- Rename _thr_smp_cpus to boolean variable _thr_is_smp.
- Define CPU_SPINWAIT macro for each arch, only X86 supports it.
2006-12-15 11:52:01 +00:00
Marcel Moolenaar
be2f4bda88 Stylize: avoid using a global register variable. 2006-09-01 21:01:11 +00:00
Marcel Moolenaar
cc79b334de Rename TLS_TP_OFFSET back to TP_OFFSET. The former clashes with rtld. 2006-09-01 06:36:00 +00:00
Marcel Moolenaar
8e61dbecfc Stylize. 2006-09-01 06:15:00 +00:00
Marcel Moolenaar
35ca217bf0 Stylize. 2006-08-31 23:31:18 +00:00
Marcel Moolenaar
9f7b8b0d3c TLS fixes:
o  The TLS pointer (r2) points 0x7000 after the *end* of the TCB.
o  _rtld_allocate_tls() gets a pointer to the current TCB, not the
   current TLS pointer.
o  _rtld_free_tls() gets the size of the TCB structure.
2006-08-31 19:16:47 +00:00
Marcel Moolenaar
91705de0c2 Fix harmless bug: sizeof(tcb) equals sizeof(void*) not sizeof(struct tcb).
The argument is (currently) not used by _rtld_free_tls().
2006-08-31 19:06:30 +00:00
Marcel Moolenaar
57c2251d5c o Set TP using inline assembly to avoid dead code elimination.
o  Eliminate _tcb.
2006-08-30 03:31:32 +00:00
Ruslan Ermilov
2b46c64c9c Remove alpha left-overs. 2006-08-22 08:03:01 +00:00
David Xu
b7e118b1e0 Remove declaration of _thr_initial from MD header file, it is no longer
needed.
2006-04-04 03:35:26 +00:00
David Xu
7bd761788d Simplify _get_curthread() and _tcb_ctor because libc and rtld now
already allocate thread pointer space in tls block for initial thread.
Only i386 and amd64 have been done, others still have to be tested.
2006-04-04 03:26:06 +00:00
David Xu
d827aa478d Remove functions i386_get_gsbase and i386_set_gsbase, they were already
in libc.
2006-01-07 06:01:43 +00:00
David Xu
c09df63bb9 Remove unused variable.
Reviewed by: cognet
2005-10-29 13:40:31 +00:00
David Xu
babdcc8d78 Kill unused variable declaration. 2005-10-29 03:08:43 +00:00
David Xu
920d31ef8d Remove COMPAT_32BIT, it is no longer needed. 2005-04-27 01:29:03 +00:00
David Xu
ff87e1a6ba Remove unused variable. 2005-04-23 03:34:43 +00:00
David Xu
a364e127e3 Now libthr only uses GDT based tls on i386. using LDT can only increase
clock cycles and has 8191 threads limitation.
2005-04-23 03:31:59 +00:00
David Xu
3466f35a77 Add i386_get_gsbase, i386_set_gsbase since old libc doesn't have the
functions, otherwise user ports have to be rebuilt.
2005-04-23 02:14:38 +00:00
Peter Wemm
c050415d18 Adapt the libpthread patch for using i386_set_gsbase() to libthr. 2005-04-14 00:44:07 +00:00
Olivier Houchard
e0d6cac076 Use the new atomic_cmpset_32(). 2005-04-07 22:06:05 +00:00
David Xu
a091d823ad Import my recent 1:1 threading working. some features improved includes:
1. fast simple type mutex.
 2. __thread tls works.
 3. asynchronous cancellation works ( using signal ).
 4. thread synchronization is fully based on umtx, mainly, condition
    variable and other synchronization objects were rewritten by using
    umtx directly. those objects can be shared between processes via
    shared memory, it has to change ABI which does not happen yet.
 5. default stack size is increased to 1M on 32 bits platform, 2M for
    64 bits platform.
As the result, some mysql super-smack benchmarks show performance is
improved massivly.

Okayed by: jeff, mtm, rwatson, scottl
2005-04-02 01:20:00 +00:00
Peter Wemm
37771efde6 Fix inverted #ifdef that I added. Who had the pointy hat last?
Submitted by:  kan
2004-12-06 20:41:09 +00:00
Peter Wemm
c5bfff3bab Use the recently exposed fs/gs set functions when compiling libthr to
run as a 32 bit support library for an amd64 kernel.  32 bit consumers of
libthr have zero chance of running on an amd64 kernel since we don't
implement the i386_set_ldt() family of functions.  Note that this commit
doesn't make it actually work, it just removes one more obstacle.
2004-11-06 03:30:53 +00:00
David Xu
9027ac471c Adjust code to support AMD64, on AMD64, thread needs to set fsbase by
itself before it can execute any other code, so new thread should be
created with all signals are masked until after fsbase is set.
2004-08-19 23:49:04 +00:00
David Xu
f5eb80a9d3 Add AMD64 support code. 2004-08-19 23:41:12 +00:00
Doug Rabson
adbadf41a9 Add TLS support for libthr on i386. 2004-08-15 16:21:30 +00:00
Mark Murray
16fc3635f7 Make NULL a (void*)0 whereever possible, and fix the warnings(-Werror)
that this provokes. "Wherever possible" means "In the kernel OR NOT
C++" (implying C).

There are places where (void *) pointers are not valid, such as for
function pointers, but in the special case of (void *)0, agreement
settles on it being OK.

Most of the fixes were NULL where an integer zero was needed; many
of the fixes were NULL where ascii <nul> ('\0') was needed, and a
few were just "other".

Tested on: i386 sparc64
2004-03-05 08:10:19 +00:00
Peter Grehan
a95a647dcc libthr powerpc support.
Submitted by:  Suleiman Souhlal <refugee@segfaulted.com>
Tested with: most libpthread tests, Apache 'worker' MDM
2004-03-02 06:25:20 +00:00
Mike Makonnen
4e3c587d23 Bump up the maximum number concurrent threads on x86. 2004-02-01 15:33:01 +00:00
Mike Makonnen
a4be5b10a2 Use dynamic instead of static LDT allocation.
Approved by: re (scottl)
2003-12-02 16:00:26 +00:00
Marcel Moolenaar
c24297c0f2 Implement _get_curthread and _set_curthread. We use GCCs builtin
function this, which expands to PAL calls (rduniq and wruniq).
This needs adjustment when TLS is implemented.
2003-07-24 07:51:49 +00:00
Mike Makonnen
9e222aaf7a The MD framework for libthr on alpha 2003-07-19 15:57:52 +00:00
Mike Makonnen
7e2160688c The move to _retire() a thread in the GC instead of in the thread's
exit function has invalidated the need for _spin[un]lock_pthread().
The _spin[un]lock() functions can now dereference curthread without
the danger that the ldtentry containing the pointer to the thread
has been cleared out from under them.
2003-06-29 00:12:40 +00:00
David E. O'Brien
a23e5f4d43 .S comments must be C comments, not ASM ones. 2003-06-02 02:32:56 +00:00
Mike Makonnen
0e335eaeb5 Missing unlock.
Approved by:	re/jhb
2003-05-29 20:49:17 +00:00
Mike Makonnen
12c407a424 Return gracefully, rather than aborting, when the maximum concurrent
threads per process has been reached. Return EAGAIN, as per spec.

Approved by:	re/blanket libthr
2003-05-25 22:40:57 +00:00
Marcel Moolenaar
9e14b94e43 The struct mcontext has changed. It's using the register sets. Bring
this in line.
2003-05-25 06:49:19 +00:00
Mike Makonnen
59a47b31d0 Add two functions: _spinlock_pthread() and _spinunlock_pthread()
that take the address of a struct pthread as their first argument.
_spin[un]lock() just become wrappers arround these two functions.
These new functions are for use in situations where curthread can't be
used. One example is _thread_retire(), where we invalidate the array index
curthread uses to get its pointer..

Approved by:	re/blanket libthr
2003-05-23 23:39:31 +00:00
Mike Makonnen
7d9d7ca2ed Make WARNS2 clean. The fixes mostly included:
o removed unused variables
	o explicit inclusion of header files
	o prototypes for externally defined functions

Approved by:    re/blanket libthr
2003-05-23 09:48:20 +00:00
Mike Makonnen
509d72c4b9 o Make the defenition of _set_curthread() match its declaration
in thr_private.h

o Lock down the ldt_entries array and ldt_free, which points to
  the next free slot. As noted in the comments, it's necessary
  to special case the initial_thread because %gs is not setup
  for it yet. This is ok because that early in the program there
  won't be any reentrancy issues anyways.

Approved by:	re/blanket libthr
2003-05-21 08:21:24 +00:00
Mike Makonnen
a260623c5f Fix a null dereference leading to a core dump when
the number of threads exceeds the number of open slots
in ldt_entries[].

Approved by:	markm (mentor)(implicit)
Reviewed by:	jeff
2003-05-06 02:33:49 +00:00
Marcel Moolenaar
1d3e7116dc Add support for ia64.
Note that the tp register (r13) is reserved as the TLS pointer in
the same way that that gp register (r1) is reserved as the global
pointer. This implementation uses the tp register to point to the
thread structure used by the threads implementation. This is not
in violation with the runtime specification provided the TLS is
a fixed distance from the thread structure. This is only an issue
when code used the __thread keyword to create TLS. This is not
supported at the moment.
2003-04-20 03:06:42 +00:00
Jake Burkholder
55ad402a8f - Pass a ucontext_t to _set_curthread. If non-NULL the new thread is set
as curthread in the new context, so that it will be set automatically when
  the thread is switched to.  This fixes a race where we'd run for a little
  while with curthread unset in _thread_start.

Reviewed by:	jeff
2003-04-03 03:34:50 +00:00
Jeff Roberson
996a395d37 - Don't overrun the ldt buffer.
Submitted by:	gordan@freebsd.org
2003-04-02 22:53:52 +00:00
Jake Burkholder
68c724b96f Implement _get_curthread and _set_curthread. This is especially easy. 2003-04-02 08:15:07 +00:00
Jake Burkholder
dd3dd8724d Add MD makefile. 2003-04-01 23:52:24 +00:00
Jeff Roberson
7a57e9abdd - Adjust the makefiles so we have a per architecture makefile. 2003-04-01 07:07:38 +00:00
Jeff Roberson
bb535300dd - Add libthr but don't hook it up to the regular build yet. This is an
adaptation of libc_r for the thr system call interface.  This is beta
   quality code.
2003-04-01 03:46:29 +00:00