diff options
Diffstat (limited to 'third_party/git/trace2.c')
| -rw-r--r-- | third_party/git/trace2.c | 785 |
1 files changed, 0 insertions, 785 deletions
diff --git a/third_party/git/trace2.c b/third_party/git/trace2.c deleted file mode 100644 index c7b4f14d29..0000000000 --- a/third_party/git/trace2.c +++ /dev/null @@ -1,785 +0,0 @@ -#include "cache.h" -#include "config.h" -#include "json-writer.h" -#include "quote.h" -#include "run-command.h" -#include "sigchain.h" -#include "thread-utils.h" -#include "version.h" -#include "trace2/tr2_cfg.h" -#include "trace2/tr2_cmd_name.h" -#include "trace2/tr2_dst.h" -#include "trace2/tr2_sid.h" -#include "trace2/tr2_sysenv.h" -#include "trace2/tr2_tgt.h" -#include "trace2/tr2_tls.h" - -static int trace2_enabled; - -static int tr2_next_child_id; /* modify under lock */ -static int tr2_next_exec_id; /* modify under lock */ -static int tr2_next_repo_id = 1; /* modify under lock. zero is reserved */ - -/* - * A table of the builtin TRACE2 targets. Each of these may be independently - * enabled or disabled. Each TRACE2 API method will try to write an event to - * *each* of the enabled targets. - */ -/* clang-format off */ -static struct tr2_tgt *tr2_tgt_builtins[] = -{ - &tr2_tgt_normal, - &tr2_tgt_perf, - &tr2_tgt_event, - NULL -}; -/* clang-format on */ - -/* clang-format off */ -#define for_each_builtin(j, tgt_j) \ - for (j = 0, tgt_j = tr2_tgt_builtins[j]; \ - tgt_j; \ - j++, tgt_j = tr2_tgt_builtins[j]) -/* clang-format on */ - -/* clang-format off */ -#define for_each_wanted_builtin(j, tgt_j) \ - for_each_builtin(j, tgt_j) \ - if (tr2_dst_trace_want(tgt_j->pdst)) -/* clang-format on */ - -/* - * Force (rather than lazily) initialize any of the requested - * builtin TRACE2 targets at startup (and before we've seen an - * actual TRACE2 event call) so we can see if we need to setup - * the TR2 and TLS machinery. - * - * Return the number of builtin targets enabled. - */ -static int tr2_tgt_want_builtins(void) -{ - struct tr2_tgt *tgt_j; - int j; - int sum = 0; - - for_each_builtin (j, tgt_j) - if (tgt_j->pfn_init()) - sum++; - - return sum; -} - -/* - * Properly terminate each builtin target. Give each target - * a chance to write a summary event and/or flush if necessary - * and then close the fd. - */ -static void tr2_tgt_disable_builtins(void) -{ - struct tr2_tgt *tgt_j; - int j; - - for_each_builtin (j, tgt_j) - tgt_j->pfn_term(); -} - -static int tr2main_exit_code; - -/* - * Our atexit routine should run after everything has finished. - * - * Note that events generated here might not actually appear if - * we are writing to fd 1 or 2 and our atexit routine runs after - * the pager's atexit routine (since it closes them to shutdown - * the pipes). - */ -static void tr2main_atexit_handler(void) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - /* - * Clear any unbalanced regions so that our atexit message - * does not appear nested. This improves the appearance of - * the trace output if someone calls die(), for example. - */ - tr2tls_pop_unwind_self(); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_atexit) - tgt_j->pfn_atexit(us_elapsed_absolute, - tr2main_exit_code); - - tr2_tgt_disable_builtins(); - - tr2tls_release(); - tr2_sid_release(); - tr2_cmd_name_release(); - tr2_cfg_free_patterns(); - tr2_sysenv_release(); - - trace2_enabled = 0; -} - -static void tr2main_signal_handler(int signo) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_signal) - tgt_j->pfn_signal(us_elapsed_absolute, signo); - - sigchain_pop(signo); - raise(signo); -} - -void trace2_initialize_clock(void) -{ - tr2tls_start_process_clock(); -} - -void trace2_initialize_fl(const char *file, int line) -{ - struct tr2_tgt *tgt_j; - int j; - - if (trace2_enabled) - return; - - tr2_sysenv_load(); - - if (!tr2_tgt_want_builtins()) - return; - trace2_enabled = 1; - - tr2_sid_get(); - - atexit(tr2main_atexit_handler); - sigchain_push(SIGPIPE, tr2main_signal_handler); - tr2tls_init(); - - /* - * Emit 'version' message on each active builtin target. - */ - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_version_fl) - tgt_j->pfn_version_fl(file, line); -} - -int trace2_is_enabled(void) -{ - return trace2_enabled; -} - -void trace2_cmd_start_fl(const char *file, int line, const char **argv) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - - if (!trace2_enabled) - return; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_start_fl) - tgt_j->pfn_start_fl(file, line, us_elapsed_absolute, - argv); -} - -int trace2_cmd_exit_fl(const char *file, int line, int code) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - - code &= 0xff; - - if (!trace2_enabled) - return code; - - trace2_collect_process_info(TRACE2_PROCESS_INFO_EXIT); - - tr2main_exit_code = code; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_exit_fl) - tgt_j->pfn_exit_fl(file, line, us_elapsed_absolute, - code); - - return code; -} - -void trace2_cmd_error_va_fl(const char *file, int line, const char *fmt, - va_list ap) -{ - struct tr2_tgt *tgt_j; - int j; - - if (!trace2_enabled) - return; - - /* - * We expect each target function to treat 'ap' as constant - * and use va_copy (because an 'ap' can only be walked once). - */ - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_error_va_fl) - tgt_j->pfn_error_va_fl(file, line, fmt, ap); -} - -void trace2_cmd_path_fl(const char *file, int line, const char *pathname) -{ - struct tr2_tgt *tgt_j; - int j; - - if (!trace2_enabled) - return; - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_command_path_fl) - tgt_j->pfn_command_path_fl(file, line, pathname); -} - -void trace2_cmd_name_fl(const char *file, int line, const char *name) -{ - struct tr2_tgt *tgt_j; - const char *hierarchy; - int j; - - if (!trace2_enabled) - return; - - tr2_cmd_name_append_hierarchy(name); - hierarchy = tr2_cmd_name_get_hierarchy(); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_command_name_fl) - tgt_j->pfn_command_name_fl(file, line, name, hierarchy); -} - -void trace2_cmd_mode_fl(const char *file, int line, const char *mode) -{ - struct tr2_tgt *tgt_j; - int j; - - if (!trace2_enabled) - return; - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_command_mode_fl) - tgt_j->pfn_command_mode_fl(file, line, mode); -} - -void trace2_cmd_alias_fl(const char *file, int line, const char *alias, - const char **argv) -{ - struct tr2_tgt *tgt_j; - int j; - - if (!trace2_enabled) - return; - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_alias_fl) - tgt_j->pfn_alias_fl(file, line, alias, argv); -} - -void trace2_cmd_list_config_fl(const char *file, int line) -{ - if (!trace2_enabled) - return; - - tr2_cfg_list_config_fl(file, line); -} - -void trace2_cmd_set_config_fl(const char *file, int line, const char *key, - const char *value) -{ - if (!trace2_enabled) - return; - - tr2_cfg_set_fl(file, line, key, value); -} - -void trace2_child_start_fl(const char *file, int line, - struct child_process *cmd) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - - if (!trace2_enabled) - return; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - cmd->trace2_child_id = tr2tls_locked_increment(&tr2_next_child_id); - cmd->trace2_child_us_start = us_now; - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_child_start_fl) - tgt_j->pfn_child_start_fl(file, line, - us_elapsed_absolute, cmd); -} - -void trace2_child_exit_fl(const char *file, int line, struct child_process *cmd, - int child_exit_code) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - uint64_t us_elapsed_child; - - if (!trace2_enabled) - return; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - if (cmd->trace2_child_us_start) - us_elapsed_child = us_now - cmd->trace2_child_us_start; - else - us_elapsed_child = 0; - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_child_exit_fl) - tgt_j->pfn_child_exit_fl(file, line, - us_elapsed_absolute, - cmd->trace2_child_id, cmd->pid, - child_exit_code, - us_elapsed_child); -} - -int trace2_exec_fl(const char *file, int line, const char *exe, - const char **argv) -{ - struct tr2_tgt *tgt_j; - int j; - int exec_id; - uint64_t us_now; - uint64_t us_elapsed_absolute; - - if (!trace2_enabled) - return -1; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - exec_id = tr2tls_locked_increment(&tr2_next_exec_id); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_exec_fl) - tgt_j->pfn_exec_fl(file, line, us_elapsed_absolute, - exec_id, exe, argv); - - return exec_id; -} - -void trace2_exec_result_fl(const char *file, int line, int exec_id, int code) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - - if (!trace2_enabled) - return; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_exec_result_fl) - tgt_j->pfn_exec_result_fl( - file, line, us_elapsed_absolute, exec_id, code); -} - -void trace2_thread_start_fl(const char *file, int line, const char *thread_name) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - - if (!trace2_enabled) - return; - - if (tr2tls_is_main_thread()) { - /* - * We should only be called from the new thread's thread-proc, - * so this is technically a bug. But in those cases where the - * main thread also runs the thread-proc function (or when we - * are built with threading disabled), we need to allow it. - * - * Convert this call to a region-enter so the nesting looks - * correct. - */ - trace2_region_enter_printf_fl(file, line, NULL, NULL, NULL, - "thread-proc on main: %s", - thread_name); - return; - } - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - tr2tls_create_self(thread_name, us_now); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_thread_start_fl) - tgt_j->pfn_thread_start_fl(file, line, - us_elapsed_absolute); -} - -void trace2_thread_exit_fl(const char *file, int line) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - uint64_t us_elapsed_thread; - - if (!trace2_enabled) - return; - - if (tr2tls_is_main_thread()) { - /* - * We should only be called from the exiting thread's - * thread-proc, so this is technically a bug. But in - * those cases where the main thread also runs the - * thread-proc function (or when we are built with - * threading disabled), we need to allow it. - * - * Convert this call to a region-leave so the nesting - * looks correct. - */ - trace2_region_leave_printf_fl(file, line, NULL, NULL, NULL, - "thread-proc on main"); - return; - } - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - /* - * Clear any unbalanced regions and then get the relative time - * for the outer-most region (which we pushed when the thread - * started). This gives us the run time of the thread. - */ - tr2tls_pop_unwind_self(); - us_elapsed_thread = tr2tls_region_elasped_self(us_now); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_thread_exit_fl) - tgt_j->pfn_thread_exit_fl(file, line, - us_elapsed_absolute, - us_elapsed_thread); - - tr2tls_unset_self(); -} - -void trace2_def_param_fl(const char *file, int line, const char *param, - const char *value) -{ - struct tr2_tgt *tgt_j; - int j; - - if (!trace2_enabled) - return; - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_param_fl) - tgt_j->pfn_param_fl(file, line, param, value); -} - -void trace2_def_repo_fl(const char *file, int line, struct repository *repo) -{ - struct tr2_tgt *tgt_j; - int j; - - if (!trace2_enabled) - return; - - if (repo->trace2_repo_id) - return; - - repo->trace2_repo_id = tr2tls_locked_increment(&tr2_next_repo_id); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_repo_fl) - tgt_j->pfn_repo_fl(file, line, repo); -} - -void trace2_region_enter_printf_va_fl(const char *file, int line, - const char *category, const char *label, - const struct repository *repo, - const char *fmt, va_list ap) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - - if (!trace2_enabled) - return; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - /* - * Print the region-enter message at the current nesting - * (indentation) level and then push a new level. - * - * We expect each target function to treat 'ap' as constant - * and use va_copy. - */ - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_region_enter_printf_va_fl) - tgt_j->pfn_region_enter_printf_va_fl( - file, line, us_elapsed_absolute, category, - label, repo, fmt, ap); - - tr2tls_push_self(us_now); -} - -void trace2_region_enter_fl(const char *file, int line, const char *category, - const char *label, const struct repository *repo, ...) -{ - va_list ap; - va_start(ap, repo); - trace2_region_enter_printf_va_fl(file, line, category, label, repo, - NULL, ap); - va_end(ap); - -} - -void trace2_region_enter_printf_fl(const char *file, int line, - const char *category, const char *label, - const struct repository *repo, - const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - trace2_region_enter_printf_va_fl(file, line, category, label, repo, fmt, - ap); - va_end(ap); -} - -#ifndef HAVE_VARIADIC_MACROS -void trace2_region_enter_printf(const char *category, const char *label, - const struct repository *repo, const char *fmt, - ...) -{ - va_list ap; - - va_start(ap, fmt); - trace2_region_enter_printf_va_fl(NULL, 0, category, label, repo, fmt, - ap); - va_end(ap); -} -#endif - -void trace2_region_leave_printf_va_fl(const char *file, int line, - const char *category, const char *label, - const struct repository *repo, - const char *fmt, va_list ap) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - uint64_t us_elapsed_region; - - if (!trace2_enabled) - return; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - /* - * Get the elapsed time in the current region before we - * pop it off the stack. Pop the stack. And then print - * the perf message at the new (shallower) level so that - * it lines up with the corresponding push/enter. - */ - us_elapsed_region = tr2tls_region_elasped_self(us_now); - - tr2tls_pop_self(); - - /* - * We expect each target function to treat 'ap' as constant - * and use va_copy. - */ - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_region_leave_printf_va_fl) - tgt_j->pfn_region_leave_printf_va_fl( - file, line, us_elapsed_absolute, - us_elapsed_region, category, label, repo, fmt, - ap); -} - -void trace2_region_leave_fl(const char *file, int line, const char *category, - const char *label, const struct repository *repo, ...) -{ - va_list ap; - va_start(ap, repo); - trace2_region_leave_printf_va_fl(file, line, category, label, repo, - NULL, ap); - va_end(ap); -} - -void trace2_region_leave_printf_fl(const char *file, int line, - const char *category, const char *label, - const struct repository *repo, - const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - trace2_region_leave_printf_va_fl(file, line, category, label, repo, fmt, - ap); - va_end(ap); -} - -#ifndef HAVE_VARIADIC_MACROS -void trace2_region_leave_printf(const char *category, const char *label, - const struct repository *repo, const char *fmt, - ...) -{ - va_list ap; - - va_start(ap, fmt); - trace2_region_leave_printf_va_fl(NULL, 0, category, label, repo, fmt, - ap); - va_end(ap); -} -#endif - -void trace2_data_string_fl(const char *file, int line, const char *category, - const struct repository *repo, const char *key, - const char *value) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - uint64_t us_elapsed_region; - - if (!trace2_enabled) - return; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - us_elapsed_region = tr2tls_region_elasped_self(us_now); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_data_fl) - tgt_j->pfn_data_fl(file, line, us_elapsed_absolute, - us_elapsed_region, category, repo, - key, value); -} - -void trace2_data_intmax_fl(const char *file, int line, const char *category, - const struct repository *repo, const char *key, - intmax_t value) -{ - struct strbuf buf_string = STRBUF_INIT; - - if (!trace2_enabled) - return; - - strbuf_addf(&buf_string, "%" PRIdMAX, value); - trace2_data_string_fl(file, line, category, repo, key, buf_string.buf); - strbuf_release(&buf_string); -} - -void trace2_data_json_fl(const char *file, int line, const char *category, - const struct repository *repo, const char *key, - const struct json_writer *value) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - uint64_t us_elapsed_region; - - if (!trace2_enabled) - return; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - us_elapsed_region = tr2tls_region_elasped_self(us_now); - - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_data_json_fl) - tgt_j->pfn_data_json_fl(file, line, us_elapsed_absolute, - us_elapsed_region, category, - repo, key, value); -} - -void trace2_printf_va_fl(const char *file, int line, const char *fmt, - va_list ap) -{ - struct tr2_tgt *tgt_j; - int j; - uint64_t us_now; - uint64_t us_elapsed_absolute; - - if (!trace2_enabled) - return; - - us_now = getnanotime() / 1000; - us_elapsed_absolute = tr2tls_absolute_elapsed(us_now); - - /* - * We expect each target function to treat 'ap' as constant - * and use va_copy. - */ - for_each_wanted_builtin (j, tgt_j) - if (tgt_j->pfn_printf_va_fl) - tgt_j->pfn_printf_va_fl(file, line, us_elapsed_absolute, - fmt, ap); -} - -void trace2_printf_fl(const char *file, int line, const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - trace2_printf_va_fl(file, line, fmt, ap); - va_end(ap); -} - -#ifndef HAVE_VARIADIC_MACROS -void trace2_printf(const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - trace2_printf_va_fl(NULL, 0, fmt, ap); - va_end(ap); -} -#endif |