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8c645fa1ee
It's now possible to create thousands of thousands of sparse independent memory mappings, without any slowdown. The memory manager is better with tracking memory protection now, particularly on Windows in a precise way that can be restored during fork(). You now have the highest quality mem manager possible. It's even better than some OSes like XNU, where mmap() is implemented as an O(n) operation which means sadly things aren't much improved over there. With this change the llamafile HTTP server endpoint at /tokenize with a prompt of 50 tokens is now able to handle 2.6m r/sec
26 lines
822 B
C
26 lines
822 B
C
#ifndef NSYNC_SEM_H_
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#define NSYNC_SEM_H_
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#include "third_party/nsync/time.h"
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COSMOPOLITAN_C_START_
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typedef struct nsync_semaphore_s_ {
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void *sem_space[3];
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} nsync_semaphore;
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/* Initialize *s; the initial value is 0. */
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bool nsync_mu_semaphore_init(nsync_semaphore *s);
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/* Wait until the count of *s exceeds 0, and decrement it. */
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errno_t nsync_mu_semaphore_p(nsync_semaphore *s);
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/* Wait until one of: the count of *s is non-zero, in which case
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decrement *s and return 0; or abs_deadline expires, in which case
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return ETIMEDOUT. */
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errno_t nsync_mu_semaphore_p_with_deadline(nsync_semaphore *s,
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nsync_time abs_deadline);
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/* Ensure that the count of *s is at least 1. */
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void nsync_mu_semaphore_v(nsync_semaphore *s);
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COSMOPOLITAN_C_END_
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#endif /* NSYNC_SEM_H_ */
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