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Updated TinyCThread.
This commit is contained in:
Camilla Berglund
parent
b4d0223faa
commit
a49c61f1a7
@ -21,13 +21,6 @@ freely, subject to the following restrictions:
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distribution.
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*/
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/* Activate some POSIX functionality (e.g. recursive mutexes) */
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#define _GNU_SOURCE
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#if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE < 500)
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#undef _XOPEN_SOURCE
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#define _XOPEN_SOURCE 500
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#endif
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#include "tinycthread.h"
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#include <stdlib.h>
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@ -99,9 +92,11 @@ int mtx_lock(mtx_t *mtx)
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#endif
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}
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int mtx_timedlock(mtx_t *mtx, const xtime *xt)
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int mtx_timedlock(mtx_t *mtx, const struct timespec *ts)
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{
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/* FIXME! */
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(void)mtx;
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(void)ts;
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return thrd_error;
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}
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@ -290,21 +285,21 @@ int cnd_wait(cnd_t *cond, mtx_t *mtx)
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#endif
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}
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int cnd_timedwait(cnd_t *cond, mtx_t *mtx, const xtime *xt)
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int cnd_timedwait(cnd_t *cond, mtx_t *mtx, const struct timespec *ts)
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{
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#if defined(_TTHREAD_WIN32_)
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xtime now;
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DWORD delta;
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xtime_get(&now, TIME_UTC);
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delta = (xt->sec - now.sec) * 1000 +
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(xt->nsec - now.nsec + 500000) / 1000000;
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struct timespec now;
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if (clock_gettime(TIME_UTC, &now) == 0)
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{
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DWORD delta = (ts->tv_sec - now.tv_sec) * 1000 +
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(ts->tv_nsec - now.tv_nsec + 500000) / 1000000;
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return _cnd_timedwait_win32(cond, mtx, delta);
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}
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else
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return thrd_error;
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#else
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struct timespec ts;
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int ret;
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ts.tv_sec = xt->sec;
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ts.tv_nsec = xt->nsec;
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ret = pthread_cond_timedwait(cond, mtx, &ts);
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ret = pthread_cond_timedwait(cond, mtx, ts);
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if (ret == ETIMEDOUT)
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{
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return thrd_timeout;
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@ -322,9 +317,9 @@ typedef struct {
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/* Thread wrapper function. */
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#if defined(_TTHREAD_WIN32_)
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unsigned WINAPI _thrd_wrapper_function(void * aArg)
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static unsigned WINAPI _thrd_wrapper_function(void * aArg)
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#elif defined(_TTHREAD_POSIX_)
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void * _thrd_wrapper_function(void * aArg)
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static void * _thrd_wrapper_function(void * aArg)
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#endif
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{
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thrd_start_t fun;
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@ -401,6 +396,7 @@ thrd_t thrd_current(void)
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int thrd_detach(thrd_t thr)
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{
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/* FIXME! */
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(void)thr;
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return thrd_error;
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}
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@ -460,9 +456,9 @@ int thrd_join(thrd_t thr, int *res)
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return thrd_success;
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}
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void thrd_sleep(const xtime *xt)
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int thrd_sleep(const struct timespec *time_point, struct timespec *remaining)
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{
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xtime now;
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struct timespec now;
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#if defined(_TTHREAD_WIN32_)
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DWORD delta;
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#else
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@ -470,20 +466,21 @@ void thrd_sleep(const xtime *xt)
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#endif
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/* Get the current time */
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xtime_get(&now, TIME_UTC);
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if (clock_gettime(TIME_UTC, &now) != 0)
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return -2; // FIXME: Some specific error code?
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#if defined(_TTHREAD_WIN32_)
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/* Delta in milliseconds */
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delta = (xt->sec - now.sec) * 1000 +
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(xt->nsec - now.nsec + 500000) / 1000000;
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delta = (time_point->tv_sec - now.tv_sec) * 1000 +
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(time_point->tv_nsec - now.tv_nsec + 500000) / 1000000;
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if (delta > 0)
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{
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Sleep(delta);
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}
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#else
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/* Delta in microseconds */
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delta = (xt->sec - now.sec) * 1000000L +
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(xt->nsec - now.nsec + 500L) / 1000L;
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delta = (time_point->tv_sec - now.tv_sec) * 1000000L +
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(time_point->tv_nsec - now.tv_nsec + 500L) / 1000L;
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/* On some systems, the usleep argument must be < 1000000 */
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while (delta > 999999L)
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@ -496,6 +493,14 @@ void thrd_sleep(const xtime *xt)
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usleep((useconds_t)delta);
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}
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#endif
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/* We don't support waking up prematurely (yet) */
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if (remaining)
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{
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remaining->tv_sec = 0;
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remaining->tv_nsec = 0;
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}
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return 0;
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}
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void thrd_yield(void)
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@ -563,26 +568,21 @@ int tss_set(tss_t key, void *val)
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return thrd_success;
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}
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int xtime_get(xtime *xt, int base)
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#if defined(_TTHREAD_EMULATE_CLOCK_GETTIME_)
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int _tthread_clock_gettime(clockid_t clk_id, struct timespec *ts)
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{
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if (base == TIME_UTC)
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{
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#if defined(_TTHREAD_WIN32_)
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struct _timeb tb;
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_ftime(&tb);
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xt->sec = (time_t)tb.time;
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xt->nsec = 1000000 * (long)tb.millitm;
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ts->tv_sec = (time_t)tb.time;
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ts->tv_nsec = 1000000L * (long)tb.millitm;
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#else
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struct timeval tv;
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gettimeofday(&tv, NULL);
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xt->sec = (time_t)tv.tv_sec;
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xt->nsec = 1000 * (long)tv.tv_usec;
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ts->tv_sec = (time_t)tv.tv_sec;
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ts->tv_nsec = 1000L * (long)tv.tv_usec;
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#endif
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return base;
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}
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else
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{
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return 0;
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}
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}
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#endif // _TTHREAD_EMULATE_CLOCK_GETTIME_
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@ -57,6 +57,22 @@ freely, subject to the following restrictions:
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#define _TTHREAD_PLATFORM_DEFINED_
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#endif
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/* Activate some POSIX functionality (e.g. clock_gettime and recursive mutexes) */
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#if defined(_TTHREAD_POSIX_)
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#undef _FEATURES_H
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#if !defined(_GNU_SOURCE)
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#define _GNU_SOURCE
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#endif
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#if !defined(_POSIX_C_SOURCE) || ((_POSIX_C_SOURCE - 0) < 199309L)
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#undef _POSIX_C_SOURCE
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#define _POSIX_C_SOURCE 199309L
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#endif
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#if !defined(_XOPEN_SOURCE) || ((_XOPEN_SOURCE - 0) < 500)
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#undef _XOPEN_SOURCE
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#define _XOPEN_SOURCE 500
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#endif
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#endif
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/* Generic includes */
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#include <time.h>
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@ -75,10 +91,42 @@ freely, subject to the following restrictions:
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#endif
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#endif
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/* Workaround for missing TIME_UTC: If time.h doesn't provide TIME_UTC,
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it's quite likely that libc does not support it either. Hence, fall back to
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the only other supported time specifier: CLOCK_REALTIME (and if that fails,
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we're probably emulating clock_gettime anyway, so anything goes). */
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#ifndef TIME_UTC
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#ifdef CLOCK_REALTIME
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#define TIME_UTC CLOCK_REALTIME
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#else
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#define TIME_UTC 0
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#endif
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#endif
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/* Workaround for missing clock_gettime (most Windows compilers, afaik) */
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#if defined(_TTHREAD_WIN32_)
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#define _TTHREAD_EMULATE_CLOCK_GETTIME_
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/* Emulate struct timespec */
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struct _ttherad_timespec {
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time_t tv_sec;
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long tv_nsec;
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};
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#define timespec _ttherad_timespec
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/* Emulate clockid_t */
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typedef int _tthread_clockid_t;
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#define clockid_t _tthread_clockid_t
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/* Emulate clock_gettime */
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int _tthread_clock_gettime(clockid_t clk_id, struct timespec *ts);
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#define clock_gettime _tthread_clock_gettime
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#endif
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/** TinyCThread version (major number). */
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#define TINYCTHREAD_VERSION_MAJOR 1
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/** TinyCThread version (minor number). */
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#define TINYCTHREAD_VERSION_MINOR 0
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#define TINYCTHREAD_VERSION_MINOR 1
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/** TinyCThread version (full version). */
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#define TINYCTHREAD_VERSION (TINYCTHREAD_VERSION_MAJOR * 100 + TINYCTHREAD_VERSION_MINOR)
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@ -101,7 +149,7 @@ freely, subject to the following restrictions:
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* @hideinitializer
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*/
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/* FIXME: Check for a PROPER value of __STDC_VERSION__ to know if we have C11 or */
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/* FIXME: Check for a PROPER value of __STDC_VERSION__ to know if we have C11 */
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#if !(defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201102L)) && !defined(_Thread_local)
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#if defined(__GNUC__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_CC) || defined(__IBMCPP__)
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#define _Thread_local __thread
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@ -126,12 +174,6 @@ freely, subject to the following restrictions:
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#define mtx_try 4
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#define mtx_recursive 8
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/** Time specification */
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typedef struct {
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time_t sec; /**< Seconds */
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long nsec; /**< Nanoseconds */
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} xtime;
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/* Mutex */
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#if defined(_TTHREAD_WIN32_)
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typedef struct {
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@ -174,7 +216,7 @@ int mtx_lock(mtx_t *mtx);
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/** NOT YET IMPLEMENTED.
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*/
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int mtx_timedlock(mtx_t *mtx, const xtime *xt);
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int mtx_timedlock(mtx_t *mtx, const struct timespec *ts);
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/** Try to lock the given mutex.
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* The specified mutex shall support either test and return or timeout. If the
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@ -260,7 +302,7 @@ int cnd_wait(cnd_t *cond, mtx_t *mtx);
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* specified in the call was reached without acquiring the requested resource, or
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* @ref thrd_error if the request could not be honored.
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*/
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int cnd_timedwait(cnd_t *cond, mtx_t *mtx, const xtime *xt);
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int cnd_timedwait(cnd_t *cond, mtx_t *mtx, const struct timespec *ts);
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/* Thread */
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#if defined(_TTHREAD_WIN32_)
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@ -326,11 +368,16 @@ void thrd_exit(int res);
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int thrd_join(thrd_t thr, int *res);
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/** Put the calling thread to sleep.
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* Suspend execution of the calling thread until after the time specified by the
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* xtime object.
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* @param xt A point in time at which the thread will resume (absolute time).
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* Suspend execution of the calling thread.
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* @param time_point A point in time at which the thread will resume (absolute time).
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* @param remaining If non-NULL, this parameter will hold the remaining time until
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* time_point upon return. This will typically be zero, but if
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* the thread was woken up by a signal that is not ignored before
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* time_point was reached @c remaining will hold a positive
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* time.
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* @return 0 (zero) on successful sleep, or -1 if an interrupt occurred.
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*/
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void thrd_sleep(const xtime *xt);
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int thrd_sleep(const struct timespec *time_point, struct timespec *remaining);
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/** Yield execution to another thread.
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* Permit other threads to run, even if the current thread would ordinarily
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@ -385,20 +432,6 @@ void *tss_get(tss_t key);
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*/
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int tss_set(tss_t key, void *val);
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/* Timing */
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enum
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{
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TIME_UTC = 1
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};
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/** Get the current time.
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* Set the xtime object to hold the current time based on the given time base.
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* @param xt Will be filled out with the current time.
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* @param base Time base (must be @c TIME_UTC).
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* @return The non-zero value @c base if the function is successful, otherwise
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* it returns zero.
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*/
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int xtime_get(xtime *xt, int base);
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#endif /* _TINYTHREAD_H_ */
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