// handler.
	i = pthread_kill(pthread_self(), SIGIO);
	if (i != 0) {
		fprintf(stderr, "pthread_kill: %s\n", strerror(i));
		exit(EXIT_FAILURE);
	}

	// Wait until the signal has been delivered.
	i = 0;
	while (SIGIOCount() == 0) {
		ts.tv_sec = 0;
		ts.tv_nsec = 1000000;
		nanosleep(&ts, NULL);
		i++;
		if (i > 5000) {
			fprintf(stderr, "looping too long waiting for signal\n");
			exit(EXIT_FAILURE);
		}
	}

			}

			int fd[2];
			if (pipe(fd) != 0) {
				printf("pipe(2) failed\n");
				return 0;
			}
			// Close the reading end.
			close(fd[0]);
			// Expect that write(2) fails (EPIPE)
			if (write(fd[1], "some data", 9) != -1) {
				printf("write(2) unexpectedly succeeded\n");
				return 0;
			}
			printf("did not receive SIGPIPE\n");
			return 0;
		}
		case 4: {
			fprintf(stderr, "OK\n");
			fflush(stderr);

	}

	if (kill(0, SIGIO) < 0) {
		die("kill");
	}

	if (verbose) {
		printf("waiting for sigioSeen\n");
	}

	// Wait until the signal has been delivered.
	i = 0;
	while (!sigioSeen) {
		ts.tv_sec = 0;
		ts.tv_nsec = 1000000;
		nanosleep(&ts, NULL);
		i++;
		if (i > 5000) {
			fprintf(stderr, "looping too long waiting for SIGIO\n");
			exit(EXIT_FAILURE);
		}
	}

	struct timeval tvstart, tvnow;
	int diff;

	gettimeofday(&tvstart, NULL);

	go_start_profile();

	// Busy wait so we have something to profile.
	// If we just sleep the profiling signal will never fire.
	while (1) {
		gettimeofday(&tvnow, NULL);
		diff = (tvnow.tv_sec - tvstart.tv_sec) * 1000 * 1000 + (tvnow.tv_usec - tvstart.tv_usec);

		// Profile frequency is 100Hz so we should definitely
		// get a signal in 50 milliseconds.

// license that can be found in the LICENSE file.

//go:build !android

#include <pthread.h>
#include <stdio.h>
#include <unistd.h>

static pthread_t thread;

static void* threadfunc(void* dummy) {
	while(1) {
		sleep(1);
	}
}

int StartThread() {
	return pthread_create(&thread, NULL, &threadfunc, NULL);
}

int CancelThread() {
	void *r;
	pthread_cancel(thread);
	pthread_join(thread, &r);

// that it is installed before the Go code starts.

static void pipeHandler(int signo, siginfo_t* info, void* ctxt) {
	const char *s = "unexpected SIGPIPE\n";
	write(2, s, strlen(s));
	exit(EXIT_FAILURE);
}

static void init(void) __attribute__ ((constructor (200)));

static void init() {
    struct sigaction sa;

	memset(&sa, 0, sizeof sa);

void lockOSThreadC(void) {
	lockOSThreadCallback();
}

void issue7978c(uint32_t *sync) {
	while(__atomic_load_n(sync, __ATOMIC_SEQ_CST) != 0)
		;
	__atomic_add_fetch(sync, 1, __ATOMIC_SEQ_CST);
	while(__atomic_load_n(sync, __ATOMIC_SEQ_CST) != 2)
		;
	issue7978cb();
	__atomic_add_fetch(sync, 1, __ATOMIC_SEQ_CST);
	while(__atomic_load_n(sync, __ATOMIC_SEQ_CST) != 6)
		;
}

void f7665(void) {

	}

	if (raise(SIGIO) < 0) {
		die("raise");
	}

	if (verbose) {
		fprintf(stderr, "waiting for sigioSeen\n");
	}

	// Wait until the signal has been delivered.
	i = 0;
	while (!sigioSeen) {
		ts.tv_sec = 0;
		ts.tv_nsec = 1000000;
		nanosleep(&ts, NULL);
		i++;
		if (i > 5000) {
			fprintf(stderr, "looping too long waiting for signal\n");
			exit(EXIT_FAILURE);
		}
	}

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !windows && !static && !(darwin && internal)

#include <stdint.h>
#include <dlfcn.h>

// Write our own versions of dlopen/dlsym/dlclose so that we represent
// the opaque handle as a Go uintptr rather than a Go pointer to avoid
// garbage collector confusion.  See issue 23663.

uintptr_t dlopen4029(char* name, int flags) {

	}

	if (kill(0, SIGIO) < 0) {
		die("kill");
	}

	if (verbose) {
		fprintf(stderr, "waiting for sigioSeen\n");
	}

	// Wait until the signal has been delivered.
	i = 0;
	while (!sigioSeen) {
		ts.tv_sec = 0;
		ts.tv_nsec = 1000000;
		nanosleep(&ts, NULL);
		i++;
		if (i > 5000) {
			fprintf(stderr, "looping too long waiting for signal\n");
			exit(EXIT_FAILURE);
		}
	}