4f0bfe0fb8
between being commited to a machno and having acquired the lock, the scheduler could come in an schedule us on a different processor. the solution is to have dtmachlock() take a special -1 argument to mean "current mach" and return the actual mach number after the lock has been acquired and interrupts being disabled.
53 lines
758 B
C
53 lines
758 B
C
#include "u.h"
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#include "../port/lib.h"
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#include "mem.h"
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#include "dat.h"
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#include "fns.h"
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#include "../port/error.h"
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#include <dtracy.h>
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static DTProbe *timerprobe;
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static void
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dtracytimer(void *)
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{
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DTTrigInfo info;
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memset(&info, 0, sizeof(info));
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for(;;){
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tsleep(&up->sleep, return0, nil, 1000);
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dtptrigger(timerprobe, &info);
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}
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}
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static void
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timerprovide(DTProvider *prov)
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{
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timerprobe = dtpnew("timer::1s", prov, nil);
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}
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static int
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timerenable(DTProbe *)
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{
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static int gotkproc;
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if(!gotkproc){
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kproc("dtracytimer", dtracytimer, nil);
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gotkproc=1;
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}
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return 0;
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}
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static void
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timerdisable(DTProbe *)
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{
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}
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DTProvider dtracytimerprov = {
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.name = "timer",
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.provide = timerprovide,
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.enable = timerenable,
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.disable = timerdisable,
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};
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