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mythread.h: Make MYTHREAD_POSIX compatible with MinGW-w64's winpthreads.

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This might be almost useless but it doesn't need much extra code either.
This commit is contained in:
Lasse Collin 2023-09-25 01:39:26 +03:00
parent 680e52cdd0
commit dd32f628bb
1 changed files with 22 additions and 1 deletions
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23
src/common/mythread.h
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@ -112,6 +112,25 @@ mythread_sigmask(int how, const sigset_t *restrict set,
# include <sys/time.h>
#endif
// MinGW-w64 with winpthreads:
//
// NOTE: Typical builds with MinGW-w64 don't use this code (MYTHREAD_POSIX).
// Instead, native Windows threading APIs are used (MYTHREAD_VISTA or
// MYTHREAD_WIN95).
//
// MinGW-w64 has _sigset_t (an integer type) in <sys/types.h>.
// If _POSIX was #defined, the header would add the alias sigset_t too.
// Let's keep this working even without _POSIX.
//
// There are no functions that actually do something with sigset_t
// because signals barely exist on Windows. The sigfillset macro below
// is just to silence warnings. There is no sigfillset() in MinGW-w64.
#ifdef __MINGW32__
# include <sys/types.h>
# define sigset_t _sigset_t
# define sigfillset(set_ptr) do { *(set_ptr) = 0; } while (0)
#endif
#define MYTHREAD_RET_TYPE void *
#define MYTHREAD_RET_VALUE NULL
@ -140,11 +159,13 @@ typedef struct timespec mythread_condtime;
// Use pthread_sigmask() to set the signal mask in multi-threaded programs.
// Do nothing on OpenVMS since it lacks pthread_sigmask().
// Do nothing on MinGW-w64 too to silence warnings (its pthread_sigmask()
// is #defined to 0 so it's a no-op).
static inline void
mythread_sigmask(int how, const sigset_t *restrict set,
sigset_t *restrict oset)
{
#ifdef __VMS
#if defined(__VMS) || defined(__MINGW32__)
(void)how;
(void)set;
(void)oset;