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use a thread-local variable to get the current running loop

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if we had a method to get the running loop, similar to how
isc_tid() gets the current thread ID, we can simplify loop
and loopmgr initialization.

remove most uses of isc_loop_current() in favor of isc_loop().
in some places where that was the only reason to pass loopmgr,
remove loopmgr from the function parameters.
This commit is contained in:
Evan Hunt
2024-03-26 00:13:45 -07:00
committed by Ondřej Surý
parent cad6292fc4
commit c47fa689d4
22 changed files with 77 additions and 79 deletions
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8
lib/isc/loop.c
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@@ -46,6 +46,8 @@
* Private
*/
thread_local isc_loop_t *isc__loop_local = NULL;
static void
ignore_signal(int sig, void (*handler)(int)) {
struct sigaction sa = { .sa_handler = handler };
@@ -263,8 +265,10 @@ loop_close(isc_loop_t *loop) {
static void *
loop_thread(void *arg) {
isc_loop_t *loop = (isc_loop_t *)arg;
/* Initialize the thread_local variables*/
/* Initialize the thread_local variable */
REQUIRE(isc__loop_local == NULL || isc__loop_local == loop);
isc__loop_local = loop;
isc__tid_init(loop->tid);
@@ -284,6 +288,8 @@ loop_thread(void *arg) {
r = uv_run(&loop->loop, UV_RUN_DEFAULT);
UV_RUNTIME_CHECK(uv_run, r);
isc__loop_local = NULL;
/* Invalidate the loop early */
loop->magic = 0;