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macos: Use <dispatch.h> for locking

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the global compiler lock can't be a POSIX non-shared semaphore on
Darwin (because not implemented there).  Use the dispatch framework.
This commit is contained in:
Michael Matz 2020-05-22 05:07:19 +02:00
parent 57ba50e611
commit b0b0e48409
1 changed files with 14 additions and 0 deletions
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14
libtcc.c
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@ -129,6 +129,20 @@ static void wait_sem(void)
}
#define WAIT_SEM() wait_sem()
#define POST_SEM() LeaveCriticalSection(&tcc_cr);
#elif defined __APPLE__
/* Half-compatible MacOS doesn't have non-shared (process local)
semaphores. Use the dispatch framework for lightweight locks. */
#include <dispatch/dispatch.h>
static int tcc_sem_init;
static dispatch_semaphore_t tcc_sem;
static void wait_sem(void)
{
if (!tcc_sem_init)
tcc_sem = dispatch_semaphore_create(1), tcc_sem_init = 1;
dispatch_semaphore_wait(tcc_sem, DISPATCH_TIME_FOREVER);
}
#define WAIT_SEM() wait_sem()
#define POST_SEM() dispatch_semaphore_signal(tcc_sem)
#else
#include <semaphore.h>
static int tcc_sem_init;