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Use *NSYNC for POSIX threads locking APIs

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Condition variables, barriers, and r/w locks now work very well.
This commit is contained in:
Justine Tunney 2022-09-11 11:02:07 -07:00
parent 3de35e196c
commit b5cb71ab84
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GPG key ID: BE714B4575D6E328
197 changed files with 3734 additions and 3817 deletions
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26
third_party/nsync/wait_s.internal.h vendored Normal file
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#ifndef COSMOPOLITAN_LIBC_THREAD_WAIT_INTERNAL_H_
#define COSMOPOLITAN_LIBC_THREAD_WAIT_INTERNAL_H_
#include "third_party/nsync/atomic.h"
#include "third_party/nsync/dll.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
/* Implementations of "struct nsync_waitable_s" must provide functions
in struct nsync_waitable_funcs_s (see public/nsync_wait.h). When
nsync_wait_n() waits on a client's object, those functions are called
with v pointing to the client's object and nw pointing to a struct
nsync_waiter_s. */
struct nsync_waiter_s {
uint32_t tag; /* used for debugging */
nsync_dll_element_ q; /* used to link children of parent */
nsync_atomic_uint32_ waiting; /* non-zero <=> the waiter is waiting */
struct nsync_semaphore_s_ *sem; /* *sem will be Ved when waiter is woken */
uint32_t flags; /* see below */
};
/* set if waiter is embedded in Mu/CV's internal structures */
#define NSYNC_WAITER_FLAG_MUCV 0x1
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_THREAD_WAIT_INTERNAL_H_ */