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IPC: allow QSystemSemaphorePosix to build on Windows

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The MinGW-provided winpthreads has <semaphore.h> and the necessary
functions, though the source seems to implement sem_open() as an
unconditional
  errno = ENOSYS;
  return SEM_FAIL;

But in case they actually implement it, we enable support.

Change-Id: I3d74c753055744deb8acfffd1723e982d05651b5
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
This commit is contained in:
Thiago Macieira 2022-11-02 16:50:35 -07:00
parent 4141c5e221
commit 968d9584ff
1 changed files with 7 additions and 1 deletions
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8
src/corelib/ipc/qsystemsemaphore_posix.cpp
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@ -17,7 +17,13 @@
#include <fcntl.h>
#include <errno.h>
#include "private/qcore_unix_p.h"
#ifdef Q_OS_UNIX
# include "private/qcore_unix_p.h"
#else
#define EINTR_LOOP_VAL(var, val, cmd) \
(void)var; var = cmd
#define EINTR_LOOP(var, cmd) EINTR_LOOP_VAL(var, -1, cmd)
#endif
// OpenBSD 4.2 doesn't define EIDRM, see BUGS section:
// http://www.openbsd.org/cgi-bin/man.cgi?query=semop&manpath=OpenBSD+4.2