diff options
Diffstat (limited to 'trace2/tr2_tgt_event.c')
| -rw-r--r-- | trace2/tr2_tgt_event.c | 588 |
1 files changed, 588 insertions, 0 deletions
diff --git a/trace2/tr2_tgt_event.c b/trace2/tr2_tgt_event.c new file mode 100644 index 0000000000..1cf4f62441 --- /dev/null +++ b/trace2/tr2_tgt_event.c @@ -0,0 +1,588 @@ +#include "cache.h" +#include "config.h" +#include "json-writer.h" +#include "run-command.h" +#include "version.h" +#include "trace2/tr2_dst.h" +#include "trace2/tr2_tbuf.h" +#include "trace2/tr2_sid.h" +#include "trace2/tr2_tgt.h" +#include "trace2/tr2_tls.h" + +static struct tr2_dst tr2dst_event = { "GIT_TR2_EVENT", 0, 0, 0 }; + +/* + * The version number of the JSON data generated by the EVENT target + * in this source file. Update this if you make a significant change + * to the JSON fields or message structure. You probably do not need + * to update this if you just add another call to one of the existing + * TRACE2 API methods. + */ +#define TR2_EVENT_VERSION "1" + +/* + * Region nesting limit for messages written to the event target. + * + * The "region_enter" and "region_leave" messages (especially recursive + * messages such as those produced while diving the worktree or index) + * are primarily intended for the performance target during debugging. + * + * Some of the outer-most messages, however, may be of interest to the + * event target. Set this environment variable to a larger integer for + * more detail in the event target. + */ +#define TR2_ENVVAR_EVENT_NESTING "GIT_TR2_EVENT_NESTING" +static int tr2env_event_nesting_wanted = 2; + +/* + * Set this environment variable to true to omit the <time>, <file>, and + * <line> fields from most events. + */ +#define TR2_ENVVAR_EVENT_BRIEF "GIT_TR2_EVENT_BRIEF" +static int tr2env_event_brief; + +static int fn_init(void) +{ + int want = tr2_dst_trace_want(&tr2dst_event); + int want_nesting; + int want_brief; + char *nesting; + char *brief; + + if (!want) + return want; + + nesting = getenv(TR2_ENVVAR_EVENT_NESTING); + if (nesting && ((want_nesting = atoi(nesting)) > 0)) + tr2env_event_nesting_wanted = want_nesting; + + brief = getenv(TR2_ENVVAR_EVENT_BRIEF); + if (brief && ((want_brief = atoi(brief)) > 0)) + tr2env_event_brief = want_brief; + + return want; +} + +static void fn_term(void) +{ + tr2_dst_trace_disable(&tr2dst_event); +} + +/* + * Append common key-value pairs to the currently open JSON object. + * "event:"<event_name>" + * "sid":"<sid>" + * "thread":"<thread_name>" + * "time":"<time>" + * "file":"<filename>" + * "line":<line_number> + * "repo":<repo_id> + */ +static void event_fmt_prepare(const char *event_name, const char *file, + int line, const struct repository *repo, + struct json_writer *jw) +{ + struct tr2tls_thread_ctx *ctx = tr2tls_get_self(); + struct tr2_tbuf tb_now; + + jw_object_string(jw, "event", event_name); + jw_object_string(jw, "sid", tr2_sid_get()); + jw_object_string(jw, "thread", ctx->thread_name.buf); + + /* + * In brief mode, only emit <time> on these 2 event types. + */ + if (!tr2env_event_brief || !strcmp(event_name, "version") || + !strcmp(event_name, "atexit")) { + tr2_tbuf_utc_time(&tb_now); + jw_object_string(jw, "time", tb_now.buf); + } + + if (!tr2env_event_brief && file && *file) { + jw_object_string(jw, "file", file); + jw_object_intmax(jw, "line", line); + } + + if (repo) + jw_object_intmax(jw, "repo", repo->trace2_repo_id); +} + +static void fn_version_fl(const char *file, int line) +{ + const char *event_name = "version"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_string(&jw, "evt", TR2_EVENT_VERSION); + jw_object_string(&jw, "exe", git_version_string); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_start_fl(const char *file, int line, const char **argv) +{ + const char *event_name = "start"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_inline_begin_array(&jw, "argv"); + jw_array_argv(&jw, argv); + jw_end(&jw); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_exit_fl(const char *file, int line, uint64_t us_elapsed_absolute, + int code) +{ + const char *event_name = "exit"; + struct json_writer jw = JSON_WRITER_INIT; + double t_abs = (double)us_elapsed_absolute / 1000000.0; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_double(&jw, "t_abs", 6, t_abs); + jw_object_intmax(&jw, "code", code); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_signal(uint64_t us_elapsed_absolute, int signo) +{ + const char *event_name = "signal"; + struct json_writer jw = JSON_WRITER_INIT; + double t_abs = (double)us_elapsed_absolute / 1000000.0; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, __FILE__, __LINE__, NULL, &jw); + jw_object_double(&jw, "t_abs", 6, t_abs); + jw_object_intmax(&jw, "signo", signo); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_atexit(uint64_t us_elapsed_absolute, int code) +{ + const char *event_name = "atexit"; + struct json_writer jw = JSON_WRITER_INIT; + double t_abs = (double)us_elapsed_absolute / 1000000.0; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, __FILE__, __LINE__, NULL, &jw); + jw_object_double(&jw, "t_abs", 6, t_abs); + jw_object_intmax(&jw, "code", code); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void maybe_add_string_va(struct json_writer *jw, const char *field_name, + const char *fmt, va_list ap) +{ + if (fmt && *fmt) { + va_list copy_ap; + struct strbuf buf = STRBUF_INIT; + + va_copy(copy_ap, ap); + strbuf_vaddf(&buf, fmt, copy_ap); + va_end(copy_ap); + + jw_object_string(jw, field_name, buf.buf); + strbuf_release(&buf); + return; + } + + if (fmt && *fmt) { + jw_object_string(jw, field_name, fmt); + return; + } +} + +static void fn_error_va_fl(const char *file, int line, const char *fmt, + va_list ap) +{ + const char *event_name = "error"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + maybe_add_string_va(&jw, "msg", fmt, ap); + /* + * Also emit the format string as a field in case + * post-processors want to aggregate common error + * messages by type without argument fields (such + * as pathnames or branch names) cluttering it up. + */ + if (fmt && *fmt) + jw_object_string(&jw, "fmt", fmt); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_command_path_fl(const char *file, int line, const char *pathname) +{ + const char *event_name = "cmd_path"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_string(&jw, "path", pathname); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_command_name_fl(const char *file, int line, const char *name, + const char *hierarchy) +{ + const char *event_name = "cmd_name"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_string(&jw, "name", name); + if (hierarchy && *hierarchy) + jw_object_string(&jw, "hierarchy", hierarchy); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_command_mode_fl(const char *file, int line, const char *mode) +{ + const char *event_name = "cmd_mode"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_string(&jw, "name", mode); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_alias_fl(const char *file, int line, const char *alias, + const char **argv) +{ + const char *event_name = "alias"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_string(&jw, "alias", alias); + jw_object_inline_begin_array(&jw, "argv"); + jw_array_argv(&jw, argv); + jw_end(&jw); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_child_start_fl(const char *file, int line, + uint64_t us_elapsed_absolute, + const struct child_process *cmd) +{ + const char *event_name = "child_start"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_intmax(&jw, "child_id", cmd->trace2_child_id); + if (cmd->trace2_hook_name) { + jw_object_string(&jw, "child_class", "hook"); + jw_object_string(&jw, "hook_name", cmd->trace2_hook_name); + } else { + const char *child_class = + cmd->trace2_child_class ? cmd->trace2_child_class : "?"; + jw_object_string(&jw, "child_class", child_class); + } + if (cmd->dir) + jw_object_string(&jw, "cd", cmd->dir); + jw_object_bool(&jw, "use_shell", cmd->use_shell); + jw_object_inline_begin_array(&jw, "argv"); + if (cmd->git_cmd) + jw_array_string(&jw, "git"); + jw_array_argv(&jw, cmd->argv); + jw_end(&jw); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_child_exit_fl(const char *file, int line, + uint64_t us_elapsed_absolute, int cid, int pid, + int code, uint64_t us_elapsed_child) +{ + const char *event_name = "child_exit"; + struct json_writer jw = JSON_WRITER_INIT; + double t_rel = (double)us_elapsed_child / 1000000.0; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_intmax(&jw, "child_id", cid); + jw_object_intmax(&jw, "pid", pid); + jw_object_intmax(&jw, "code", code); + jw_object_double(&jw, "t_rel", 6, t_rel); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + + jw_release(&jw); +} + +static void fn_thread_start_fl(const char *file, int line, + uint64_t us_elapsed_absolute) +{ + const char *event_name = "thread_start"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_thread_exit_fl(const char *file, int line, + uint64_t us_elapsed_absolute, + uint64_t us_elapsed_thread) +{ + const char *event_name = "thread_exit"; + struct json_writer jw = JSON_WRITER_INIT; + double t_rel = (double)us_elapsed_thread / 1000000.0; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_double(&jw, "t_rel", 6, t_rel); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_exec_fl(const char *file, int line, uint64_t us_elapsed_absolute, + int exec_id, const char *exe, const char **argv) +{ + const char *event_name = "exec"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_intmax(&jw, "exec_id", exec_id); + if (exe) + jw_object_string(&jw, "exe", exe); + jw_object_inline_begin_array(&jw, "argv"); + jw_array_argv(&jw, argv); + jw_end(&jw); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_exec_result_fl(const char *file, int line, + uint64_t us_elapsed_absolute, int exec_id, + int code) +{ + const char *event_name = "exec_result"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_intmax(&jw, "exec_id", exec_id); + jw_object_intmax(&jw, "code", code); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_param_fl(const char *file, int line, const char *param, + const char *value) +{ + const char *event_name = "def_param"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, NULL, &jw); + jw_object_string(&jw, "param", param); + jw_object_string(&jw, "value", value); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_repo_fl(const char *file, int line, + const struct repository *repo) +{ + const char *event_name = "def_repo"; + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, repo, &jw); + jw_object_string(&jw, "worktree", repo->worktree); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); +} + +static void fn_region_enter_printf_va_fl(const char *file, int line, + uint64_t us_elapsed_absolute, + const char *category, + const char *label, + const struct repository *repo, + const char *fmt, va_list ap) +{ + const char *event_name = "region_enter"; + struct tr2tls_thread_ctx *ctx = tr2tls_get_self(); + if (ctx->nr_open_regions <= tr2env_event_nesting_wanted) { + struct json_writer jw = JSON_WRITER_INIT; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, repo, &jw); + jw_object_intmax(&jw, "nesting", ctx->nr_open_regions); + if (category) + jw_object_string(&jw, "category", category); + if (label) + jw_object_string(&jw, "label", label); + maybe_add_string_va(&jw, "msg", fmt, ap); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); + } +} + +static void fn_region_leave_printf_va_fl( + const char *file, int line, uint64_t us_elapsed_absolute, + uint64_t us_elapsed_region, const char *category, const char *label, + const struct repository *repo, const char *fmt, va_list ap) +{ + const char *event_name = "region_leave"; + struct tr2tls_thread_ctx *ctx = tr2tls_get_self(); + if (ctx->nr_open_regions <= tr2env_event_nesting_wanted) { + struct json_writer jw = JSON_WRITER_INIT; + double t_rel = (double)us_elapsed_region / 1000000.0; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, repo, &jw); + jw_object_double(&jw, "t_rel", 6, t_rel); + jw_object_intmax(&jw, "nesting", ctx->nr_open_regions); + if (category) + jw_object_string(&jw, "category", category); + if (label) + jw_object_string(&jw, "label", label); + maybe_add_string_va(&jw, "msg", fmt, ap); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); + } +} + +static void fn_data_fl(const char *file, int line, uint64_t us_elapsed_absolute, + uint64_t us_elapsed_region, const char *category, + const struct repository *repo, const char *key, + const char *value) +{ + const char *event_name = "data"; + struct tr2tls_thread_ctx *ctx = tr2tls_get_self(); + if (ctx->nr_open_regions <= tr2env_event_nesting_wanted) { + struct json_writer jw = JSON_WRITER_INIT; + double t_abs = (double)us_elapsed_absolute / 1000000.0; + double t_rel = (double)us_elapsed_region / 1000000.0; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, repo, &jw); + jw_object_double(&jw, "t_abs", 6, t_abs); + jw_object_double(&jw, "t_rel", 6, t_rel); + jw_object_intmax(&jw, "nesting", ctx->nr_open_regions); + jw_object_string(&jw, "category", category); + jw_object_string(&jw, "key", key); + jw_object_string(&jw, "value", value); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); + } +} + +static void fn_data_json_fl(const char *file, int line, + uint64_t us_elapsed_absolute, + uint64_t us_elapsed_region, const char *category, + const struct repository *repo, const char *key, + const struct json_writer *value) +{ + const char *event_name = "data_json"; + struct tr2tls_thread_ctx *ctx = tr2tls_get_self(); + if (ctx->nr_open_regions <= tr2env_event_nesting_wanted) { + struct json_writer jw = JSON_WRITER_INIT; + double t_abs = (double)us_elapsed_absolute / 1000000.0; + double t_rel = (double)us_elapsed_region / 1000000.0; + + jw_object_begin(&jw, 0); + event_fmt_prepare(event_name, file, line, repo, &jw); + jw_object_double(&jw, "t_abs", 6, t_abs); + jw_object_double(&jw, "t_rel", 6, t_rel); + jw_object_intmax(&jw, "nesting", ctx->nr_open_regions); + jw_object_string(&jw, "category", category); + jw_object_string(&jw, "key", key); + jw_object_sub_jw(&jw, "value", value); + jw_end(&jw); + + tr2_dst_write_line(&tr2dst_event, &jw.json); + jw_release(&jw); + } +} + +struct tr2_tgt tr2_tgt_event = { + &tr2dst_event, + + fn_init, + fn_term, + + fn_version_fl, + fn_start_fl, + fn_exit_fl, + fn_signal, + fn_atexit, + fn_error_va_fl, + fn_command_path_fl, + fn_command_name_fl, + fn_command_mode_fl, + fn_alias_fl, + fn_child_start_fl, + fn_child_exit_fl, + fn_thread_start_fl, + fn_thread_exit_fl, + fn_exec_fl, + fn_exec_result_fl, + fn_param_fl, + fn_repo_fl, + fn_region_enter_printf_va_fl, + fn_region_leave_printf_va_fl, + fn_data_fl, + fn_data_json_fl, + NULL, /* printf */ +}; |