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cleanups - lots of removed files now in thread library.

Browse source 
qlock.c - stubs to thread library
notify.c - clean interface slightly.
This commit is contained in:
rsc 2004-12-26 21:51:15 +00:00
parent b2ff538258
commit 5f8fa94796
27 changed files with 123 additions and 968 deletions
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29
src/lib9/notify.c
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@ -7,9 +7,9 @@
* There is no equivalent note to Unix's SIGKILL, since
* it's not a deliverable signal anyway.
*
* We do not handle SIGABRT or SIGSEGV, mainly so that
* stack traces show the original source of the signal instead
* of notifysigf.
* We do not handle SIGABRT or SIGSEGV, mainly because
* the thread library queues its notes for later, and we want
* to dump core with the state at time of delivery.
*
* We have to add some extra entry points to provide the
* ability to tweak which signals are deliverable and which
@ -112,7 +112,6 @@ static void (*notifyf)(void*, char*); /* Plan 9 handler */
static void
signotify(int sig)
{
int v;
char tmp[64];
Jmp *j;
@ -150,7 +149,6 @@ noted(int v)
int
notify(void (*f)(void*, char*))
{
int i;
static int init;
notifyf = f;
@ -164,7 +162,8 @@ notify(void (*f)(void*, char*))
/*
* Nonsense about enabling and disabling signals.
*/
static void(*)(int)
typedef void Sighandler(int);
static Sighandler*
handler(int s)
{
struct sigaction sa;
@ -174,7 +173,7 @@ handler(int s)
}
static void
notifysetenable(int sig, int enabled)
notesetenable(int sig, int enabled)
{
sigset_t mask;
@ -187,15 +186,15 @@ notifysetenable(int sig, int enabled)
}
void
notifyenable(char *msg)
noteenable(char *msg)
{
notifyenablex(_p9strsig(msg), 1);
notesetenable(_p9strsig(msg), 1);
}
void
notifydisable(char *msg)
notedisable(char *msg)
{
notifyenablex(_p9strsig(msg), 0);
notesetenable(_p9strsig(msg), 0);
}
static void
@ -207,7 +206,8 @@ notifyseton(int s, int on)
sig = findsig(s);
if(sig == nil)
return;
notifyenable(msg);
if(on)
notesetenable(s, 1);
memset(&sa, 0, sizeof sa);
sa.sa_handler = on ? signotify : signonotify;
if(sig->restart)
@ -234,7 +234,7 @@ notifyon(char *msg)
void
notifyoff(char *msg)
{
notifysetoff(_p9strsig(msg), 0);
notifyseton(_p9strsig(msg), 0);
}
/*
@ -252,6 +252,7 @@ noteinit(void)
* If someone has already installed a handler,
* It's probably some ld preload nonsense,
* like pct (a SIGVTALRM-based profiler).
* Or maybe someone has already called notifyon/notifyoff.
* Leave it alone.
*/
if(handler(sig->sig) != SIG_DFL)
@ -261,7 +262,7 @@ noteinit(void)
* (I.e. if parent has disabled for us, should we still enable?)
* Right now we always initialize to the state we want.
*/
notifysetenable(sig->sig, sig->enabled);
notesetenable(sig->sig, sig->enabled);
notifyseton(sig->sig, sig->notified);
}
}