diff options
Diffstat (limited to 'third_party/git/trace2/tr2_tgt_perf.c')
| -rw-r--r-- | third_party/git/trace2/tr2_tgt_perf.c | 535 |
1 files changed, 535 insertions, 0 deletions
diff --git a/third_party/git/trace2/tr2_tgt_perf.c b/third_party/git/trace2/tr2_tgt_perf.c new file mode 100644 index 000000000000..ea0cbbe13ee0 --- /dev/null +++ b/third_party/git/trace2/tr2_tgt_perf.c @@ -0,0 +1,535 @@ +#include "cache.h" +#include "config.h" +#include "run-command.h" +#include "quote.h" +#include "version.h" +#include "json-writer.h" +#include "trace2/tr2_dst.h" +#include "trace2/tr2_sid.h" +#include "trace2/tr2_sysenv.h" +#include "trace2/tr2_tbuf.h" +#include "trace2/tr2_tgt.h" +#include "trace2/tr2_tls.h" + +static struct tr2_dst tr2dst_perf = { TR2_SYSENV_PERF, 0, 0, 0 }; + +/* + * Use TR2_SYSENV_PERF_BRIEF to omit the "<time> <file>:<line>" + * fields from each line written to the builtin performance target. + * + * Unit tests may want to use this to help with testing. + */ +static int tr2env_perf_be_brief; + +#define TR2FMT_PERF_FL_WIDTH (50) +#define TR2FMT_PERF_MAX_EVENT_NAME (12) +#define TR2FMT_PERF_REPO_WIDTH (4) +#define TR2FMT_PERF_CATEGORY_WIDTH (10) + +#define TR2_DOTS_BUFFER_SIZE (100) +#define TR2_INDENT (2) +#define TR2_INDENT_LENGTH(ctx) (((ctx)->nr_open_regions - 1) * TR2_INDENT) + +static struct strbuf dots = STRBUF_INIT; + +static int fn_init(void) +{ + int want = tr2_dst_trace_want(&tr2dst_perf); + int want_brief; + const char *brief; + + if (!want) + return want; + + strbuf_addchars(&dots, '.', TR2_DOTS_BUFFER_SIZE); + + brief = tr2_sysenv_get(TR2_SYSENV_PERF_BRIEF); + if (brief && *brief && + ((want_brief = git_parse_maybe_bool(brief)) != -1)) + tr2env_perf_be_brief = want_brief; + + return want; +} + +static void fn_term(void) +{ + tr2_dst_trace_disable(&tr2dst_perf); + + strbuf_release(&dots); +} + +/* + * Format trace line prefix in human-readable classic format for + * the performance target: + * "[<time> [<file>:<line>] <bar>] <nr_parents> <bar> + * <thread_name> <bar> <event_name> <bar> [<repo>] <bar> + * [<elapsed_absolute>] [<elapsed_relative>] <bar> + * [<category>] <bar> [<dots>] " + */ +static void perf_fmt_prepare(const char *event_name, + struct tr2tls_thread_ctx *ctx, const char *file, + int line, const struct repository *repo, + uint64_t *p_us_elapsed_absolute, + uint64_t *p_us_elapsed_relative, + const char *category, struct strbuf *buf) +{ + int len; + + strbuf_setlen(buf, 0); + + if (!tr2env_perf_be_brief) { + struct tr2_tbuf tb_now; + + tr2_tbuf_local_time(&tb_now); + strbuf_addstr(buf, tb_now.buf); + strbuf_addch(buf, ' '); + + if (file && *file) + strbuf_addf(buf, "%s:%d ", file, line); + while (buf->len < TR2FMT_PERF_FL_WIDTH) + strbuf_addch(buf, ' '); + + strbuf_addstr(buf, "| "); + } + + strbuf_addf(buf, "d%d | ", tr2_sid_depth()); + strbuf_addf(buf, "%-*s | %-*s | ", TR2_MAX_THREAD_NAME, + ctx->thread_name.buf, TR2FMT_PERF_MAX_EVENT_NAME, + event_name); + + len = buf->len + TR2FMT_PERF_REPO_WIDTH; + if (repo) + strbuf_addf(buf, "r%d ", repo->trace2_repo_id); + while (buf->len < len) + strbuf_addch(buf, ' '); + strbuf_addstr(buf, "| "); + + if (p_us_elapsed_absolute) + strbuf_addf(buf, "%9.6f | ", + ((double)(*p_us_elapsed_absolute)) / 1000000.0); + else + strbuf_addf(buf, "%9s | ", " "); + + if (p_us_elapsed_relative) + strbuf_addf(buf, "%9.6f | ", + ((double)(*p_us_elapsed_relative)) / 1000000.0); + else + strbuf_addf(buf, "%9s | ", " "); + + strbuf_addf(buf, "%-*s | ", TR2FMT_PERF_CATEGORY_WIDTH, + (category ? category : "")); + + if (ctx->nr_open_regions > 0) { + int len_indent = TR2_INDENT_LENGTH(ctx); + while (len_indent > dots.len) { + strbuf_addbuf(buf, &dots); + len_indent -= dots.len; + } + strbuf_addf(buf, "%.*s", len_indent, dots.buf); + } +} + +static void perf_io_write_fl(const char *file, int line, const char *event_name, + const struct repository *repo, + uint64_t *p_us_elapsed_absolute, + uint64_t *p_us_elapsed_relative, + const char *category, + const struct strbuf *buf_payload) +{ + struct tr2tls_thread_ctx *ctx = tr2tls_get_self(); + struct strbuf buf_line = STRBUF_INIT; + + perf_fmt_prepare(event_name, ctx, file, line, repo, + p_us_elapsed_absolute, p_us_elapsed_relative, category, + &buf_line); + strbuf_addbuf(&buf_line, buf_payload); + tr2_dst_write_line(&tr2dst_perf, &buf_line); + strbuf_release(&buf_line); +} + +static void fn_version_fl(const char *file, int line) +{ + const char *event_name = "version"; + struct strbuf buf_payload = STRBUF_INIT; + + strbuf_addstr(&buf_payload, git_version_string); + + perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL, + &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_start_fl(const char *file, int line, + uint64_t us_elapsed_absolute, const char **argv) +{ + const char *event_name = "start"; + struct strbuf buf_payload = STRBUF_INIT; + + sq_quote_argv_pretty(&buf_payload, argv); + + perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute, + NULL, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_exit_fl(const char *file, int line, uint64_t us_elapsed_absolute, + int code) +{ + const char *event_name = "exit"; + struct strbuf buf_payload = STRBUF_INIT; + + strbuf_addf(&buf_payload, "code:%d", code); + + perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute, + NULL, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_signal(uint64_t us_elapsed_absolute, int signo) +{ + const char *event_name = "signal"; + struct strbuf buf_payload = STRBUF_INIT; + + strbuf_addf(&buf_payload, "signo:%d", signo); + + perf_io_write_fl(__FILE__, __LINE__, event_name, NULL, + &us_elapsed_absolute, NULL, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_atexit(uint64_t us_elapsed_absolute, int code) +{ + const char *event_name = "atexit"; + struct strbuf buf_payload = STRBUF_INIT; + + strbuf_addf(&buf_payload, "code:%d", code); + + perf_io_write_fl(__FILE__, __LINE__, event_name, NULL, + &us_elapsed_absolute, NULL, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +static void maybe_append_string_va(struct strbuf *buf, const char *fmt, + va_list ap) +{ + if (fmt && *fmt) { + va_list copy_ap; + + va_copy(copy_ap, ap); + strbuf_vaddf(buf, fmt, copy_ap); + va_end(copy_ap); + return; + } + + if (fmt && *fmt) { + strbuf_addstr(buf, 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 strbuf buf_payload = STRBUF_INIT; + + maybe_append_string_va(&buf_payload, fmt, ap); + + perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL, + &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_command_path_fl(const char *file, int line, const char *pathname) +{ + const char *event_name = "cmd_path"; + struct strbuf buf_payload = STRBUF_INIT; + + strbuf_addstr(&buf_payload, pathname); + + perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL, + &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_command_name_fl(const char *file, int line, const char *name, + const char *hierarchy) +{ + const char *event_name = "cmd_name"; + struct strbuf buf_payload = STRBUF_INIT; + + strbuf_addstr(&buf_payload, name); + if (hierarchy && *hierarchy) + strbuf_addf(&buf_payload, " (%s)", hierarchy); + + perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL, + &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_command_mode_fl(const char *file, int line, const char *mode) +{ + const char *event_name = "cmd_mode"; + struct strbuf buf_payload = STRBUF_INIT; + + strbuf_addstr(&buf_payload, mode); + + perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL, + &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_alias_fl(const char *file, int line, const char *alias, + const char **argv) +{ + const char *event_name = "alias"; + struct strbuf buf_payload = STRBUF_INIT; + + strbuf_addf(&buf_payload, "alias:%s argv:", alias); + sq_quote_argv_pretty(&buf_payload, argv); + + perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL, + &buf_payload); + strbuf_release(&buf_payload); +} + +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 strbuf buf_payload = STRBUF_INIT; + + if (cmd->trace2_hook_name) { + strbuf_addf(&buf_payload, "[ch%d] class:hook hook:%s", + cmd->trace2_child_id, cmd->trace2_hook_name); + } else { + const char *child_class = + cmd->trace2_child_class ? cmd->trace2_child_class : "?"; + strbuf_addf(&buf_payload, "[ch%d] class:%s", + cmd->trace2_child_id, child_class); + } + + if (cmd->dir) { + strbuf_addstr(&buf_payload, " cd:"); + sq_quote_buf_pretty(&buf_payload, cmd->dir); + } + + strbuf_addstr(&buf_payload, " argv:"); + if (cmd->git_cmd) + strbuf_addstr(&buf_payload, " git"); + sq_quote_argv_pretty(&buf_payload, cmd->argv); + + perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute, + NULL, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +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 strbuf buf_payload = STRBUF_INIT; + + strbuf_addf(&buf_payload, "[ch%d] pid:%d code:%d", cid, pid, code); + + perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute, + &us_elapsed_child, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_thread_start_fl(const char *file, int line, + uint64_t us_elapsed_absolute) +{ + const char *event_name = "thread_start"; + struct strbuf buf_payload = STRBUF_INIT; + + perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute, + NULL, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +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 strbuf buf_payload = STRBUF_INIT; + + perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute, + &us_elapsed_thread, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +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 strbuf buf_payload = STRBUF_INIT; + + strbuf_addf(&buf_payload, "id:%d ", exec_id); + strbuf_addstr(&buf_payload, "argv:"); + if (exe) + strbuf_addf(&buf_payload, " %s", exe); + sq_quote_argv_pretty(&buf_payload, argv); + + perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute, + NULL, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +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 strbuf buf_payload = STRBUF_INIT; + + strbuf_addf(&buf_payload, "id:%d code:%d", exec_id, code); + if (code > 0) + strbuf_addf(&buf_payload, " err:%s", strerror(code)); + + perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute, + NULL, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_param_fl(const char *file, int line, const char *param, + const char *value) +{ + const char *event_name = "def_param"; + struct strbuf buf_payload = STRBUF_INIT; + + strbuf_addf(&buf_payload, "%s:%s", param, value); + + perf_io_write_fl(file, line, event_name, NULL, NULL, NULL, NULL, + &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_repo_fl(const char *file, int line, + const struct repository *repo) +{ + const char *event_name = "def_repo"; + struct strbuf buf_payload = STRBUF_INIT; + + strbuf_addstr(&buf_payload, "worktree:"); + sq_quote_buf_pretty(&buf_payload, repo->worktree); + + perf_io_write_fl(file, line, event_name, repo, NULL, NULL, NULL, + &buf_payload); + strbuf_release(&buf_payload); +} + +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 strbuf buf_payload = STRBUF_INIT; + + if (label) + strbuf_addf(&buf_payload, "label:%s ", label); + maybe_append_string_va(&buf_payload, fmt, ap); + + perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute, + NULL, category, &buf_payload); + strbuf_release(&buf_payload); +} + +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 strbuf buf_payload = STRBUF_INIT; + + if (label) + strbuf_addf(&buf_payload, "label:%s ", label); + maybe_append_string_va(&buf_payload, fmt, ap); + + perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute, + &us_elapsed_region, category, &buf_payload); + strbuf_release(&buf_payload); +} + +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 strbuf buf_payload = STRBUF_INIT; + + strbuf_addf(&buf_payload, "%s:%s", key, value); + + perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute, + &us_elapsed_region, category, &buf_payload); + strbuf_release(&buf_payload); +} + +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 strbuf buf_payload = STRBUF_INIT; + + strbuf_addf(&buf_payload, "%s:%s", key, value->json.buf); + + perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute, + &us_elapsed_region, category, &buf_payload); + strbuf_release(&buf_payload); +} + +static void fn_printf_va_fl(const char *file, int line, + uint64_t us_elapsed_absolute, const char *fmt, + va_list ap) +{ + const char *event_name = "printf"; + struct strbuf buf_payload = STRBUF_INIT; + + maybe_append_string_va(&buf_payload, fmt, ap); + + perf_io_write_fl(file, line, event_name, NULL, &us_elapsed_absolute, + NULL, NULL, &buf_payload); + strbuf_release(&buf_payload); +} + +struct tr2_tgt tr2_tgt_perf = { + &tr2dst_perf, + + 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, + fn_printf_va_fl, +}; 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