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47 lines
1010 B
47 lines
1010 B
2 weeks ago
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#ifndef _EVENTLOG_H_
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#define _EVENTLOG_H_
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#include <stdatomic.h>
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#include <stdint.h>
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#include <stddef.h>
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#define EVENTLOG_DATA_MAX_SIZE (128 - 16)
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#define EVENTLOG_TYPE_STRING 0
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struct eventlog_entry
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{
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atomic_uint_fast64_t timestamp;
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uint32_t type_id;
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uint32_t datalen;
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uint8_t data[EVENTLOG_DATA_MAX_SIZE];
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};
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struct eventlog_shm_header
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{
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uint32_t magic;
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uint32_t version;
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atomic_uint_fast64_t tail;
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uint64_t size;
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struct eventlog_entry* entries;
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};
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enum eventlog_mode
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{
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EVENTLOG_MODE_CREATE = 0,
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EVENTLOG_MODE_ATTACH = 1,
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};
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int eventlog_init(const char* path, enum eventlog_mode mode);
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int eventlog_shutdown();
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int eventlog_emit_event(uint64_t timestamp, const char* fmt, ...);
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int eventlog_emit_event_struct(uint64_t timestamp, uint32_t type, void* data, size_t data_size);
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uint64_t eventlog_get_timestamp();
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int eventlog_get_snapshot(uint64_t* head, struct eventlog_entry* buffer, size_t buffer_size, size_t* actual_size);
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#endif /* _EVENTLOG_H_ */
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