589c63b424
For better or worse, Jemalloc has a significant number of global variables. Making all eligible global variables `static` and/or `const` at least makes it slightly easier to reason about them, as these qualifications communicate to the programmer restrictions on their use without having to `grep` the whole codebase.
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
#ifndef JEMALLOC_INTERNAL_NSTIME_H
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#define JEMALLOC_INTERNAL_NSTIME_H
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/* Maximum supported number of seconds (~584 years). */
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#define NSTIME_SEC_MAX KQU(18446744072)
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#define NSTIME_MAGIC ((uint32_t)0xb8a9ce37)
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#ifdef JEMALLOC_DEBUG
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# define NSTIME_ZERO_INITIALIZER {0, NSTIME_MAGIC}
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#else
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# define NSTIME_ZERO_INITIALIZER {0}
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#endif
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typedef struct {
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uint64_t ns;
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#ifdef JEMALLOC_DEBUG
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uint32_t magic; /* Tracks if initialized. */
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#endif
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} nstime_t;
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static const nstime_t nstime_zero = NSTIME_ZERO_INITIALIZER;
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void nstime_init(nstime_t *time, uint64_t ns);
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void nstime_init2(nstime_t *time, uint64_t sec, uint64_t nsec);
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uint64_t nstime_ns(const nstime_t *time);
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uint64_t nstime_sec(const nstime_t *time);
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uint64_t nstime_msec(const nstime_t *time);
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uint64_t nstime_nsec(const nstime_t *time);
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void nstime_copy(nstime_t *time, const nstime_t *source);
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int nstime_compare(const nstime_t *a, const nstime_t *b);
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void nstime_add(nstime_t *time, const nstime_t *addend);
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void nstime_iadd(nstime_t *time, uint64_t addend);
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void nstime_subtract(nstime_t *time, const nstime_t *subtrahend);
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void nstime_isubtract(nstime_t *time, uint64_t subtrahend);
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void nstime_imultiply(nstime_t *time, uint64_t multiplier);
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void nstime_idivide(nstime_t *time, uint64_t divisor);
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uint64_t nstime_divide(const nstime_t *time, const nstime_t *divisor);
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uint64_t nstime_ns_since(const nstime_t *past);
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typedef bool (nstime_monotonic_t)(void);
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extern nstime_monotonic_t *JET_MUTABLE nstime_monotonic;
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typedef void (nstime_update_t)(nstime_t *);
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extern nstime_update_t *JET_MUTABLE nstime_update;
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typedef void (nstime_prof_update_t)(nstime_t *);
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extern nstime_prof_update_t *JET_MUTABLE nstime_prof_update;
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void nstime_init_update(nstime_t *time);
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void nstime_prof_init_update(nstime_t *time);
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enum prof_time_res_e {
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prof_time_res_default = 0,
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prof_time_res_high = 1
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};
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typedef enum prof_time_res_e prof_time_res_t;
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extern prof_time_res_t opt_prof_time_res;
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extern const char *const prof_time_res_mode_names[];
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JEMALLOC_ALWAYS_INLINE void
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nstime_init_zero(nstime_t *time) {
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nstime_copy(time, &nstime_zero);
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}
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JEMALLOC_ALWAYS_INLINE bool
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nstime_equals_zero(nstime_t *time) {
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int diff = nstime_compare(time, &nstime_zero);
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assert(diff >= 0);
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return diff == 0;
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}
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#endif /* JEMALLOC_INTERNAL_NSTIME_H */
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