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91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
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/* $Header$ */
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/*
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* LinuxThreads specific stuff.
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*/
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#include <sys/types.h>
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#include <assert.h>
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#include <limits.h> /* PTHREAD_THREADS_MAX */
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#include <pthread.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <signal.h>
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#include <sched.h>
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#include "linuxthreads.h"
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#define AT_INT(intval) *((int32_t*)(intval))
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/*
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* Internal LinuxThreads variables.
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* Official interface exposed to GDB.
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*/
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#if 1
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extern volatile int __pthread_threads_debug;
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extern volatile char __pthread_handles;
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extern char __pthread_initial_thread;
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/*extern volatile Elf32_Sym* __pthread_manager_thread;*/
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extern const int __pthread_sizeof_handle;
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extern const int __pthread_offsetof_descr;
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extern const int __pthread_offsetof_pid;
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extern volatile int __pthread_handles_num;
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#endif /* 0 */
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/*
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* Notify others.
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*/
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int
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linuxthreads_notify_others( const int signotify)
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{
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const pid_t mypid = getpid();
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//const pthread_t mytid = pthread_self();
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int i;
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int threadcount = 0;
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int threads[PTHREAD_THREADS_MAX];
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int pid;
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TRACE_FPRINTF((stderr, "theadcount:%d\n", __pthread_handles_num));
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if (__pthread_handles_num==2) {
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/* no threads beside the initial thread */
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return 0;
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}
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/*assert(maxthreads>=3);
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assert(maxthreads>=__pthread_handles_num+2);*/
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// take the initial thread with us
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pid = AT_INT(&__pthread_initial_thread + __pthread_offsetof_pid);
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if (pid!=mypid && pid!=0)
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threads[threadcount++] = pid;
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// don't know why, but always handles[0]==handles[1]
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for (i=1; i<__pthread_handles_num; ++i) {
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const int descr = AT_INT(&__pthread_handles+i*__pthread_sizeof_handle+__pthread_offsetof_descr);
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assert(descr!=0);
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pid = AT_INT(descr+__pthread_offsetof_pid);
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if (pid!=mypid && pid!=0)
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threads[threadcount++] = pid;
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}
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/* TRACE_FPRINTF((stderr, "Stopping threads...")); */
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//for (i=0; i<threadcount; ++i) {
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// /* TRACE_FPRINTF((stderr, "%d ", threads[i])); */
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// fflush(stdout);
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// kill(threads[i], SIGSTOP); /* Tell thread to stop */
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//}
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/* TRACE_FPRINTF((stderr, " done!\n")); */
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for (i=0; i<threadcount; ++i) {
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TRACE_FPRINTF((stderr, "--- NOTIFYING %d\n", threads[i]));
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kill(threads[i], signotify); /* Tell to print stack trace */
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/* TRACE_FPRINTF((stderr, "--- WAITING FOR %d\n", threads[i])); */
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/*pause(); Wait for confirmation. */
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}
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for (i=0; i<threadcount; ++i)
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sched_yield();
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for (i=0; i<threadcount; ++i) {
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TRACE_FPRINTF((stderr, "--- KILLING %d\n", threads[i]));
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kill(threads[i], SIGKILL); /* Tell thread die :) */
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}
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return __pthread_handles_num;
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}
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