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eeb20775d2
This will help C++ code that uses exceptions to be tinier. For example, this change shaves away 1000 lines of assembly code from LLVM's libcxx, which is 0.7% of all assembly instructions in the entire library.
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
#ifndef COSMOPOLITAN_LIBC_CALLS_SEMAPHORE_H_
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#define COSMOPOLITAN_LIBC_CALLS_SEMAPHORE_H_
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#include "libc/calls/struct/timespec.h"
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COSMOPOLITAN_C_START_
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#define SEM_FAILED ((sem_t *)0)
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#define SEM_MAGIC_NAMED 0xDEADBEEFu
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#define SEM_MAGIC_UNNAMED 0xFEEDABEEu
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#define SEM_MAGIC_KERNEL 0xCAFEBABEu
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typedef struct {
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union {
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struct {
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_Atomic(int) sem_value;
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_Atomic(int) sem_waiters;
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_Atomic(int) sem_prefs; /* named only */
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unsigned sem_magic;
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int64_t sem_dev; /* named only */
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int64_t sem_ino; /* named only */
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int sem_pid; /* unnamed only */
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char sem_lazydelete; /* named only */
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char sem_pshared;
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int *sem_kernel;
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};
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void *sem_space[32];
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};
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} sem_t;
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int sem_init(sem_t *, int, unsigned) libcesque;
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int sem_destroy(sem_t *) libcesque;
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int sem_post(sem_t *) libcesque;
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int sem_wait(sem_t *) libcesque;
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int sem_trywait(sem_t *) libcesque;
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int sem_timedwait(sem_t *, const struct timespec *) libcesque;
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int sem_getvalue(sem_t *, int *) libcesque;
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sem_t *sem_open(const char *, int, ...) libcesque;
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int sem_close(sem_t *) libcesque;
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int sem_unlink(const char *) libcesque;
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_CALLS_SEMAPHORE_H_ */
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