forked from cory/tildefriends
106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
#pragma once
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/**
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** \defgroup trace Performance Tracing
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** Generates trace output that is compatible with speedscope.app,
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** chrome://tracing or ui.perfetto.dev for scrutinizing what each thread is
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** doing for optimization purposes.
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** @{
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*/
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#include <inttypes.h>
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#include <stddef.h>
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/**
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** A trace instance.
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*/
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typedef struct _tf_trace_t tf_trace_t;
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/**
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** An SQLite database instance.
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*/
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typedef struct sqlite3 sqlite3;
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/**
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** Create a trace instance. Can be used to produce a Chrome trace event
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** document for analyzing performance. Clean up with tf_trace_destroy().
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** @return A trace instance.
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*/
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tf_trace_t* tf_trace_create();
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/**
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** Destroy a trace instance that was created with tf_trace_create().
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*/
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void tf_trace_destroy(tf_trace_t* trace);
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/**
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** Set the name of the current process.
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** @param trace The trace instance.
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** @param name The name of the process.
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*/
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void tf_trace_set_process_name(tf_trace_t* trace, const char* name);
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/**
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** Record counter values.
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** @param trace The trace instance.
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** @param name The counter group name.
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** @param argc The number of counters.
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** @param arg_names The counter names.
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** @param arg_values The counter values.
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*/
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void tf_trace_counter(tf_trace_t* trace, const char* name, int argc, const char** arg_names, const int64_t* arg_values);
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/**
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** Begin tracing a time interval. End with tf_trace_end().
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** @param trace The trace instance.
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** @param name The interval name.
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*/
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void tf_trace_begin(tf_trace_t* trace, const char* name);
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/**
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** End tracing the next time interval previously started with tf_trace_begin().
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** @param trace The trace instance.
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*/
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void tf_trace_end(tf_trace_t* trace);
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/**
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** Export all currently stored trace data to a string.
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** @param trace The trace instance.
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** @return A string representation of the trace data.
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*/
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char* tf_trace_export(tf_trace_t* trace);
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/**
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** A callback to collect trace data.
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** @param trace The trace instance.
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** @param buffer The trace data.
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** @param size The size of the trace data.
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** @param user_data User data registered with the callback.
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*/
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typedef void(tf_trace_write_callback_t)(tf_trace_t* trace, const char* buffer, size_t size, void* user_data);
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/**
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** Replace the trace recording behavior.
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** @param trace The trace instance.
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** @param callback A callback that will be called instead of collecting the trace data in a buffer.
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** @param user_data User data to pass to the callback.
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*/
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void tf_trace_set_write_callback(tf_trace_t* trace, tf_trace_write_callback_t* callback, void* user_data);
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/**
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** Inject raw trace data.
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** @param trace The trace instance.
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** @param buffer The trace data.
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** @param size The size of the trace data.
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*/
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void tf_trace_raw(tf_trace_t* trace, const char* buffer, size_t size);
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/**
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** Register for trace-worthy events from sqlite and record them going forward.
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** @param trace The trace instance.
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** @param sqlite The SQLite database.
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*/
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void tf_trace_sqlite(tf_trace_t* trace, sqlite3* sqlite);
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/** @} */
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