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trace2: rename the thread_name argument to trace2_thread_start 

Rename the `thread_name` argument in `tr2tls_create_self()` and
`trace2_thread_start()` to be `thread_base_name` to make it clearer
that the passed argument is a component used in the construction of
the actual `struct tr2tls_thread_ctx.thread_name` variable.

The base name will be used along with the thread id to create a
unique thread name.

This commit does not change how the `thread_name` field is
allocated or stored within the `tr2tls_thread_ctx` structure.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff Hostetler 2022-10-24 13:41:03 +00:00 committed by Junio C Hamano
parent 8e8c5ad27a
commit a70839cf36
4 changed files with 12 additions and 11 deletions
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6
trace2.c
View File

@ -466,7 +466,7 @@ void trace2_exec_result_fl(const char *file, int line, int exec_id, int code)
file, line, us_elapsed_absolute, exec_id, code);
}
void trace2_thread_start_fl(const char *file, int line, const char *thread_name)
void trace2_thread_start_fl(const char *file, int line, const char *thread_base_name)
{
struct tr2_tgt *tgt_j;
int j;
@ -488,14 +488,14 @@ void trace2_thread_start_fl(const char *file, int line, const char *thread_name)
*/
trace2_region_enter_printf_fl(file, line, NULL, NULL, NULL,
"thread-proc on main: %s",
thread_name);
thread_base_name);
return;
}
us_now = getnanotime() / 1000;
us_elapsed_absolute = tr2tls_absolute_elapsed(us_now);
tr2tls_create_self(thread_name, us_now);
tr2tls_create_self(thread_base_name, us_now);
for_each_wanted_builtin (j, tgt_j)
if (tgt_j->pfn_thread_start_fl)

11
trace2.h
View File

@ -304,14 +304,15 @@ void trace2_exec_result_fl(const char *file, int line, int exec_id, int code);
* thread-proc to allow the thread to create its own thread-local
* storage.
*
* Thread names should be descriptive, like "preload_index".
* Thread names will be decorated with an instance number automatically.
* The thread base name should be descriptive, like "preload_index" or
* taken from the thread-proc function. A unique thread name will be
* created from the given base name and the thread id automatically.
*/
void trace2_thread_start_fl(const char *file, int line,
const char *thread_name);
const char *thread_base_name);
#define trace2_thread_start(thread_name) \
trace2_thread_start_fl(__FILE__, __LINE__, (thread_name))
#define trace2_thread_start(thread_base_name) \
trace2_thread_start_fl(__FILE__, __LINE__, (thread_base_name))
/*
* Emit a 'thread_exit' event. This must be called from inside the

4
trace2/tr2_tls.c
View File

@ -31,7 +31,7 @@ void tr2tls_start_process_clock(void)
tr2tls_us_start_process = getnanotime() / 1000;
}
struct tr2tls_thread_ctx *tr2tls_create_self(const char *thread_name,
struct tr2tls_thread_ctx *tr2tls_create_self(const char *thread_base_name,
uint64_t us_thread_start)
{
struct tr2tls_thread_ctx *ctx = xcalloc(1, sizeof(*ctx));
@ -50,7 +50,7 @@ struct tr2tls_thread_ctx *tr2tls_create_self(const char *thread_name,
strbuf_init(&ctx->thread_name, 0);
if (ctx->thread_id)
strbuf_addf(&ctx->thread_name, "th%02d:", ctx->thread_id);
strbuf_addstr(&ctx->thread_name, thread_name);
strbuf_addstr(&ctx->thread_name, thread_base_name);
if (ctx->thread_name.len > TR2_MAX_THREAD_NAME)
strbuf_setlen(&ctx->thread_name, TR2_MAX_THREAD_NAME);

2
trace2/tr2_tls.h
View File

@ -35,7 +35,7 @@ struct tr2tls_thread_ctx {
* In this and all following functions the term "self" refers to the
* current thread.
*/
struct tr2tls_thread_ctx *tr2tls_create_self(const char *thread_name,
struct tr2tls_thread_ctx *tr2tls_create_self(const char *thread_base_name,
uint64_t us_thread_start);
/*