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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 13:54:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 13:54:38 +0000 |
commit | 8c1ab65c0f548d20b7f177bdb736daaf603340e1 (patch) | |
tree | df55b7e75bf43f2bf500845b105afe3ac3a5157e /libc-top-half/musl/src/thread/pthread_mutexattr_setprotocol.c | |
parent | Initial commit. (diff) | |
download | wasi-libc-upstream/0.0_git20221206.8b7148f.tar.xz wasi-libc-upstream/0.0_git20221206.8b7148f.zip |
Adding upstream version 0.0~git20221206.8b7148f.upstream/0.0_git20221206.8b7148f
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libc-top-half/musl/src/thread/pthread_mutexattr_setprotocol.c')
-rw-r--r-- | libc-top-half/musl/src/thread/pthread_mutexattr_setprotocol.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/thread/pthread_mutexattr_setprotocol.c b/libc-top-half/musl/src/thread/pthread_mutexattr_setprotocol.c new file mode 100644 index 0000000..84b02ba --- /dev/null +++ b/libc-top-half/musl/src/thread/pthread_mutexattr_setprotocol.c @@ -0,0 +1,32 @@ +#include "pthread_impl.h" +#include "syscall.h" + +static volatile int check_pi_result = -1; + +int pthread_mutexattr_setprotocol(pthread_mutexattr_t *a, int protocol) +{ + int r; + switch (protocol) { + case PTHREAD_PRIO_NONE: + a->__attr &= ~8; + return 0; + case PTHREAD_PRIO_INHERIT: +#ifdef __wasilibc_unmodified_upstream + r = check_pi_result; + if (r < 0) { + volatile int lk = 0; + r = -__syscall(SYS_futex, &lk, FUTEX_LOCK_PI, 0, 0); + a_store(&check_pi_result, r); + } + if (r) return r; + a->__attr |= 8; + return 0; +#else + return ENOTSUP; +#endif + case PTHREAD_PRIO_PROTECT: + return ENOTSUP; + default: + return EINVAL; + } +} |