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Properly initialize the last active time of the initial thread. This fixes

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the case that a CPU hungry main thread is prevented from being preempted
due to a negative calculation of its time slice.

Reported by:	Alexander Litvin <archer@lucky.net>
This commit is contained in:
Daniel Eischen 2000-01-18 11:35:25 +00:00
parent 85dd55e473
commit 7e416d8e49
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=56236
3 changed files with 18 additions and 0 deletions
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6
lib/libc_r/uthread/uthread_init.c
View File

@ -90,6 +90,7 @@ _thread_init(void)
int i;
size_t len;
int mib[2];
struct timeval tv;
struct clockinfo clockinfo;
struct sigaction act;
@ -223,6 +224,11 @@ _thread_init(void)
TAILQ_INIT(&(_thread_initial->mutexq));
_thread_initial->priority_mutex_count = 0;
/* Initialize last active time to now: */
gettimeofday(&tv, NULL);
_thread_initial->last_active.tv_sec = tv.tv_sec;
_thread_initial->last_active.tv_usec = tv.tv_usec;
/* Initialise the rest of the fields: */
_thread_initial->poll_data.nfds = 0;
_thread_initial->poll_data.fds = NULL;

6
lib/libkse/thread/thr_init.c
View File

@ -90,6 +90,7 @@ _thread_init(void)
int i;
size_t len;
int mib[2];
struct timeval tv;
struct clockinfo clockinfo;
struct sigaction act;
@ -223,6 +224,11 @@ _thread_init(void)
TAILQ_INIT(&(_thread_initial->mutexq));
_thread_initial->priority_mutex_count = 0;
/* Initialize last active time to now: */
gettimeofday(&tv, NULL);
_thread_initial->last_active.tv_sec = tv.tv_sec;
_thread_initial->last_active.tv_usec = tv.tv_usec;
/* Initialise the rest of the fields: */
_thread_initial->poll_data.nfds = 0;
_thread_initial->poll_data.fds = NULL;

6
lib/libpthread/thread/thr_init.c
View File

@ -90,6 +90,7 @@ _thread_init(void)
int i;
size_t len;
int mib[2];
struct timeval tv;
struct clockinfo clockinfo;
struct sigaction act;
@ -223,6 +224,11 @@ _thread_init(void)
TAILQ_INIT(&(_thread_initial->mutexq));
_thread_initial->priority_mutex_count = 0;
/* Initialize last active time to now: */
gettimeofday(&tv, NULL);
_thread_initial->last_active.tv_sec = tv.tv_sec;
_thread_initial->last_active.tv_usec = tv.tv_usec;
/* Initialise the rest of the fields: */
_thread_initial->poll_data.nfds = 0;
_thread_initial->poll_data.fds = NULL;