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git/trace2/tr2_tgt_perf.c
Elijah Newren d1cbe1e6d8 hash-ll.h: split out of hash.h to remove dependency on repository.h 
hash.h depends upon and includes repository.h, due to the definition and
use of the_hash_algo (defined as the_repository->hash_algo).  However,
most headers trying to include hash.h are only interested in the layout
of the structs like object_id.  Move the parts of hash.h that do not
depend upon repository.h into a new file hash-ll.h (the "low level"
parts of hash.h), and adjust other files to use this new header where
the convenience inline functions aren't needed.

This allows hash.h and object.h to be fairly small, minimal headers.  It
also exposes a lot of hidden dependencies on both path.h (which was
brought in by repository.h) and repository.h (which was previously
implicitly brought in by object.h), so also adjust other files to be
more explicit about what they depend upon.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-24 12:47:32 -07:00

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#include "git-compat-util.h"
#include "config.h"
#include "repository.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"
#include "trace2/tr2_tmr.h"
static struct tr2_dst tr2dst_perf = {
.sysenv_var = TR2_SYSENV_PERF,
};
/*
* 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 (28)
#define TR2FMT_PERF_MAX_EVENT_NAME (12)
#define TR2FMT_PERF_REPO_WIDTH (3)
#define TR2FMT_PERF_CATEGORY_WIDTH (12)
#define TR2_INDENT (2)
#define TR2_INDENT_LENGTH(ctx) (((ctx)->nr_open_regions - 1) * TR2_INDENT)
static int fn_init(void)
{
int want = tr2_dst_trace_want(&tr2dst_perf);
int want_brief;
const char *brief;
if (!want)
return want;
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);
}
/*
* 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;
size_t fl_end_col;
tr2_tbuf_local_time(&tb_now);
strbuf_addstr(buf, tb_now.buf);
strbuf_addch(buf, ' ');
fl_end_col = buf->len + TR2FMT_PERF_FL_WIDTH;
if (file && *file) {
struct strbuf buf_fl = STRBUF_INIT;
strbuf_addf(&buf_fl, "%s:%d", file, line);
if (buf_fl.len <= TR2FMT_PERF_FL_WIDTH)
strbuf_addbuf(buf, &buf_fl);
else {
size_t avail = TR2FMT_PERF_FL_WIDTH - 3;
strbuf_addstr(buf, "...");
strbuf_add(buf,
&buf_fl.buf[buf_fl.len - avail],
avail);
}
strbuf_release(&buf_fl);
}
while (buf->len < fl_end_col)
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, 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,
TR2FMT_PERF_CATEGORY_WIDTH, (category ? category : ""));
if (ctx->nr_open_regions > 0)
strbuf_addchars(buf, '.', TR2_INDENT_LENGTH(ctx));
}
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_append_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;
}
}
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_ancestry_fl(const char *file, int line, const char **parent_names)
{
const char *event_name = "cmd_ancestry";
struct strbuf buf_payload = STRBUF_INIT;
strbuf_addstr(&buf_payload, "ancestry:[");
/* It's not an argv but the rules are basically the same. */
sq_append_quote_argv_pretty(&buf_payload, parent_names);
strbuf_addch(&buf_payload, ']');
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_append_quote_argv_pretty(&buf_payload, argv);
strbuf_addch(&buf_payload, ']');
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");
if (cmd->args.nr)
strbuf_addch(&buf_payload, ' ');
}
sq_append_quote_argv_pretty(&buf_payload, cmd->args.v);
strbuf_addch(&buf_payload, ']');
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_child_ready_fl(const char *file, int line,
uint64_t us_elapsed_absolute, int cid, int pid,
const char *ready, uint64_t us_elapsed_child)
{
const char *event_name = "child_ready";
struct strbuf buf_payload = STRBUF_INIT;
strbuf_addf(&buf_payload, "[ch%d] pid:%d ready:%s", cid, pid, ready);
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_addstr(&buf_payload, exe);
if (argv[0])
strbuf_addch(&buf_payload, ' ');
}
sq_append_quote_argv_pretty(&buf_payload, argv);
strbuf_addch(&buf_payload, ']');
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;
struct strbuf scope_payload = STRBUF_INIT;
enum config_scope scope = current_config_scope();
const char *scope_name = config_scope_name(scope);
strbuf_addf(&buf_payload, "%s:%s", param, value);
strbuf_addf(&scope_payload, "%s:%s", "scope", scope_name);
perf_io_write_fl(file, line, event_name, NULL, NULL, NULL,
scope_payload.buf, &buf_payload);
strbuf_release(&buf_payload);
strbuf_release(&scope_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);
if (fmt && *fmt) {
strbuf_addch(&buf_payload, ' ');
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);
if (fmt && *fmt) {
strbuf_addch(&buf_payload, ' ' );
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);
}
static void fn_timer(const struct tr2_timer_metadata *meta,
const struct tr2_timer *timer,
int is_final_data)
{
const char *event_name = is_final_data ? "timer" : "th_timer";
struct strbuf buf_payload = STRBUF_INIT;
double t_total = NS_TO_SEC(timer->total_ns);
double t_min = NS_TO_SEC(timer->min_ns);
double t_max = NS_TO_SEC(timer->max_ns);
strbuf_addf(&buf_payload, ("name:%s"
" intervals:%"PRIu64
" total:%8.6f min:%8.6f max:%8.6f"),
meta->name,
timer->interval_count,
t_total, t_min, t_max);
perf_io_write_fl(__FILE__, __LINE__, event_name, NULL, NULL, NULL,
meta->category, &buf_payload);
strbuf_release(&buf_payload);
}
static void fn_counter(const struct tr2_counter_metadata *meta,
const struct tr2_counter *counter,
int is_final_data)
{
const char *event_name = is_final_data ? "counter" : "th_counter";
struct strbuf buf_payload = STRBUF_INIT;
strbuf_addf(&buf_payload, "name:%s value:%"PRIu64,
meta->name,
counter->value);
perf_io_write_fl(__FILE__, __LINE__, event_name, NULL, NULL, NULL,
meta->category, &buf_payload);
strbuf_release(&buf_payload);
}
struct tr2_tgt tr2_tgt_perf = {
.pdst = &tr2dst_perf,
.pfn_init = fn_init,
.pfn_term = fn_term,
.pfn_version_fl = fn_version_fl,
.pfn_start_fl = fn_start_fl,
.pfn_exit_fl = fn_exit_fl,
.pfn_signal = fn_signal,
.pfn_atexit = fn_atexit,
.pfn_error_va_fl = fn_error_va_fl,
.pfn_command_path_fl = fn_command_path_fl,
.pfn_command_ancestry_fl = fn_command_ancestry_fl,
.pfn_command_name_fl = fn_command_name_fl,
.pfn_command_mode_fl = fn_command_mode_fl,
.pfn_alias_fl = fn_alias_fl,
.pfn_child_start_fl = fn_child_start_fl,
.pfn_child_exit_fl = fn_child_exit_fl,
.pfn_child_ready_fl = fn_child_ready_fl,
.pfn_thread_start_fl = fn_thread_start_fl,
.pfn_thread_exit_fl = fn_thread_exit_fl,
.pfn_exec_fl = fn_exec_fl,
.pfn_exec_result_fl = fn_exec_result_fl,
.pfn_param_fl = fn_param_fl,
.pfn_repo_fl = fn_repo_fl,
.pfn_region_enter_printf_va_fl = fn_region_enter_printf_va_fl,
.pfn_region_leave_printf_va_fl = fn_region_leave_printf_va_fl,
.pfn_data_fl = fn_data_fl,
.pfn_data_json_fl = fn_data_json_fl,
.pfn_printf_va_fl = fn_printf_va_fl,
.pfn_timer = fn_timer,
.pfn_counter = fn_counter,
};
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