package main

// This is for issue #42207.
// During a call to needm we could get a SIGCHLD signal
// which would itself call needm, causing a deadlock.

/*
#include <signal.h>
#include <pthread.h>
#include <sched.h>
#include <unistd.h>

extern void GoNeedM();

#define SIGNALERS 10

static void* needmSignalThread(void* p) {
	pthread_t* pt = (pthread_t*)(p);
	int i;

	for (i = 0; i < 100; i++) {

			// transition anymore.
			trace.GoSched()
		}
		casgstatus(gp, _Grunning, _Grunnable)
		if trace.ok() {
			traceRelease(trace)
		}
		dropg()
		lock(&sched.lock)
		globrunqput(gp)
		unlock(&sched.lock)

		trace = traceAcquire()
		casgstatus(callingG, _Gwaiting, _Grunnable)
		if trace.ok() {
			trace.GoUnpark(callingG, 0)
			traceRelease(trace)
		}
		execute(callingG, true)

// os/signal.Notify.
// This is a lot like ../testcarchive/main3.c.

#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sched.h>
#include <dlfcn.h>

static void die(const char* msg) {
	perror(msg);
	exit(EXIT_FAILURE);
}

static volatile sig_atomic_t sigioSeen;

static void ioHandler(int signo, siginfo_t* info, void* ctxt) {

// Test os/signal.Notify and os/signal.Reset.
// This is a lot like ../testcshared/main5.c.

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sched.h>
#include <unistd.h>
#include <pthread.h>

#include "libgo3.h"

static void die(const char* msg) {
	perror(msg);
	exit(EXIT_FAILURE);
}

static volatile sig_atomic_t sigioSeen;

#include <setjmp.h>
#include <signal.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <sched.h>
#include <time.h>
#include <dlfcn.h>

static void die(const char* msg) {
	perror(msg);
	exit(EXIT_FAILURE);
}

static volatile sig_atomic_t sigioSeen;

// Use up some stack space.

#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <sched.h>
#include <time.h>
#include <errno.h>

#include "libgo2.h"

static void die(const char* msg) {
	perror(msg);
	exit(EXIT_FAILURE);
}

static volatile sig_atomic_t sigioSeen;

// Test a C thread that calls sigaltstack and then calls Go code.

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sched.h>
#include <pthread.h>

#include "libgo4.h"

#ifdef _AIX
// On AIX, CSIGSTKSZ is too small to handle Go sighandler.
#define CSIGSTKSZ 0x4000
#else
#define CSIGSTKSZ SIGSTKSZ
#endif

func (r *traceSchedResourceState) readyNextGen(gen uintptr) {
	nextGen := traceNextGen(gen)
	r.seq[nextGen%2] = 0
	r.statusTraced[nextGen%3].Store(0)
}

// statusWasTraced returns true if the sched resource's status was already acquired for tracing.
func (r *traceSchedResourceState) statusWasTraced(gen uintptr) bool {
	return r.statusTraced[gen%3].Load() != 0
}

// is running as was running when the call came in from JavaScript, execution can be safely passed back to JavaScript.
func handleEvent() {
	sched.idleTime.Add(nanotime() - idleStart)

	e := &event{
		gp:       getg(),
		returned: false,
	}
	events = append(events, e)

	if !eventHandler() {

		gnext.lockedm.set(mp)
	}

	// Release the trace locker. We've completed all the necessary transitions..
	if trace.ok() {
		traceRelease(trace)
	}

	// Switch to gnext. Does not return.
	gogo(&gnext.sched)