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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.
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
#ifndef COSMOPOLITAN_LIBC_CALLS_STRUCT_CPUSET_H_
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#define COSMOPOLITAN_LIBC_CALLS_STRUCT_CPUSET_H_
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#define CPU_SETSIZE 1024
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COSMOPOLITAN_C_START_
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typedef struct cpu_set_t {
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uint64_t __bits[16];
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} cpu_set_t;
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int sched_getcpu(void) libcesque;
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int sched_getaffinity(int, size_t, cpu_set_t *) libcesque;
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int sched_setaffinity(int, size_t, const cpu_set_t *) libcesque;
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#define CPU_SET(i, s) ((s)->__bits[(i) / 64] |= 1ull << ((i) % 64))
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#define CPU_CLR(i, s) ((s)->__bits[(i) / 64] &= ~(1ull << ((i) % 64)))
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#define CPU_ISSET(i, s) (!!((s)->__bits[(i) / 64] & (1ull << ((i) % 64))))
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void CPU_ZERO(cpu_set_t *) libcesque;
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#define CPU_ZERO(x) CPU_ZERO(x)
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int CPU_COUNT(cpu_set_t *) libcesque;
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#define CPU_COUNT(x) CPU_COUNT(x)
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int CPU_EQUAL(cpu_set_t *, cpu_set_t *) libcesque;
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#define CPU_EQUAL(x, y) CPU_EQUAL(x, y)
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void CPU_AND(cpu_set_t *, cpu_set_t *, cpu_set_t *) libcesque;
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#define CPU_AND(x, y, z) CPU_AND(x, y, z)
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void CPU_OR(cpu_set_t *, cpu_set_t *, cpu_set_t *) libcesque;
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#define CPU_OR(x, y, z) CPU_OR(x, y, z)
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void CPU_XOR(cpu_set_t *, cpu_set_t *, cpu_set_t *) libcesque;
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#define CPU_XOR(x, y, z) CPU_XOR(x, y, z)
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int CPU_COUNT_S(size_t, const cpu_set_t *) libcesque;
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#define CPU_COUNT_S(x, y) CPU_COUNT_S(x, y)
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#define CPU_ALLOC_SIZE(n) \
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((((n) + (8 * sizeof(long) - 1)) & -(8 * sizeof(long))) / sizeof(long))
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#define CPU_ALLOC(n) ((cpu_set_t *)calloc(1, CPU_ALLOC_SIZE(n)))
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#define CPU_FREE(set) free(set)
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#define CPU_ZERO_S(size, set) memset(set, 0, size)
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#define CPU_EQUAL_S(size, set1, set2) (!memcmp(set1, set2, size))
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#define _CPU_S(i, size, set, op) \
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((i) / 8U >= (size) ? 0 \
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: (((unsigned long *)(set))[(i) / 8 / sizeof(long)] op( \
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1UL << ((i) % (8 * sizeof(long))))))
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#define CPU_SET_S(i, size, set) _CPU_S(i, size, set, |=)
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#define CPU_CLR_S(i, size, set) _CPU_S(i, size, set, &= ~)
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#define CPU_ISSET_S(i, size, set) _CPU_S(i, size, set, &)
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_CALLS_STRUCT_CPUSET_H_ */
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