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server-skynet-source-3rd-je.../include/jemalloc/internal/spin_inlines.h

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Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
#ifndef JEMALLOC_INTERNAL_SPIN_INLINES_H
#define JEMALLOC_INTERNAL_SPIN_INLINES_H
#ifndef JEMALLOC_ENABLE_INLINE
void spin_adaptive(spin_t *spin);
#endif
#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_SPIN_C_))
JEMALLOC_INLINE void
Update brace style. Add braces around single-line blocks, and remove line breaks before function-opening braces. This resolves #537.
2017-01-16 08:56:30 +08:00
spin_adaptive(spin_t *spin) {
Enhance spin_adaptive() to yield after several iterations. This avoids worst case behavior if e.g. another thread is preempted while owning the resource the spinning thread is waiting for.
2017-02-09 02:30:44 +08:00
volatile uint32_t i;
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
Enhance spin_adaptive() to yield after several iterations. This avoids worst case behavior if e.g. another thread is preempted while owning the resource the spinning thread is waiting for.
2017-02-09 02:30:44 +08:00
if (spin->iteration < 5) {
for (i = 0; i < (1U << spin->iteration); i++) {
CPU_SPINWAIT;
}
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
spin->iteration++;
Enhance spin_adaptive() to yield after several iterations. This avoids worst case behavior if e.g. another thread is preempted while owning the resource the spinning thread is waiting for.
2017-02-09 02:30:44 +08:00
} else {
#ifdef _WIN32
SwitchToThread();
#else
sched_yield();
#endif
Update brace style. Add braces around single-line blocks, and remove line breaks before function-opening braces. This resolves #537.
2017-01-16 08:56:30 +08:00
}
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
}
#endif
#endif /* JEMALLOC_INTERNAL_SPIN_INLINES_H */
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