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9849b4c7ba
This change also fixes the clock_nanosleep() api and polyfills futexes on Windows, Mac, and NetBSD using exponential backoff.
26 lines
1.1 KiB
C
26 lines
1.1 KiB
C
#ifndef COSMOPOLITAN_LIBC_THREAD_WAIT_INTERNAL_H_
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#define COSMOPOLITAN_LIBC_THREAD_WAIT_INTERNAL_H_
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#include "third_party/nsync/atomic.h"
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#include "third_party/nsync/dll.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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/* Implementations of "struct nsync_waitable_s" must provide functions
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in struct nsync_waitable_funcs_s (see public/nsync_wait.h). When
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nsync_wait_n() waits on a client's object, those functions are called
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with v pointing to the client's object and nw pointing to a struct
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nsync_waiter_s. */
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struct nsync_waiter_s {
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uint32_t tag; /* used for debugging */
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uint32_t flags; /* see below */
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nsync_dll_element_ q; /* used to link children of parent */
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nsync_atomic_uint32_ waiting; /* non-zero <=> the waiter is waiting */
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struct nsync_semaphore_s_ *sem; /* *sem will be Ved when waiter is woken */
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};
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/* set if waiter is embedded in Mu/CV's internal structures */
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#define NSYNC_WAITER_FLAG_MUCV 0x1
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_THREAD_WAIT_INTERNAL_H_ */
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