diff options
Diffstat (limited to 'trace2.h')
| -rw-r--r-- | trace2.h | 43 |
1 files changed, 34 insertions, 9 deletions
@@ -20,8 +20,26 @@ struct json_writer; */ /* + * Initialize the TRACE2 clock and do nothing else, in particular + * no mallocs, no system inspection, and no environment inspection. + * + * This should be called at the very top of main() to capture the + * process start time. This is intended to reduce chicken-n-egg + * bootstrap pressure. + * + * It is safe to call this more than once. This allows capturing + * absolute startup costs on Windows which uses a little trickery + * to do setup work before common-main.c:main() is called. + * + * The main trace2_initialize_fl() may be called a little later + * after more infrastructure is established. + */ +void trace2_initialize_clock(void); + +/* * Initialize TRACE2 tracing facility if any of the builtin TRACE2 - * targets are enabled in the environment. Emits a 'version' event. + * targets are enabled in the system config or the environment. + * Emits a 'version' event. * * Cleanup/Termination is handled automatically by a registered * atexit() routine. @@ -108,10 +126,11 @@ void trace2_cmd_alias_fl(const char *file, int line, const char *alias, * Emit one or more 'def_param' events for "interesting" configuration * settings. * - * The environment variable "GIT_TR2_CONFIG_PARAMS" can be set to a - * list of patterns considered important. For example: - * - * GIT_TR2_CONFIG_PARAMS="core.*,remote.*.url" + * Use the TR2_SYSENV_CFG_PARAM setting to register a comma-separated + * list of patterns configured important. For example: + * git config --system trace2.configParams 'core.*,remote.*.url' + * or: + * GIT_TR2_CONFIG_PARAMS=core.*,remote.*.url" * * Note: this routine does a read-only iteration on the config data * (using read_early_config()), so it must not be called until enough @@ -372,13 +391,19 @@ void trace2_printf(const char *fmt, ...); * Optional platform-specific code to dump information about the * current and any parent process(es). This is intended to allow * post-processors to know who spawned this git instance and anything - * else the platform may be able to tell us about the current process. + * else that the platform may be able to tell us about the current process. */ + +enum trace2_process_info_reason { + TRACE2_PROCESS_INFO_STARTUP, + TRACE2_PROCESS_INFO_EXIT, +}; + #if defined(GIT_WINDOWS_NATIVE) -void trace2_collect_process_info(void); +void trace2_collect_process_info(enum trace2_process_info_reason reason); #else -#define trace2_collect_process_info() \ - do { \ +#define trace2_collect_process_info(reason) \ + do { \ } while (0) #endif |