67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
// RUN: %clangxx -std=c++11 -O0 -g %s -o %t && %run %t
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#include <assert.h>
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#include <signal.h>
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#include <unistd.h>
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static bool sahandler_done;
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static bool sasigaction_done;
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static void sahandler(int) { sahandler_done = true; }
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static void sasigaction(int, siginfo_t *, void *) { sasigaction_done = true; }
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template <typename T> void install(T *handler, struct sigaction *prev) {
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bool siginfo = handler == (T *)&sasigaction;
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struct sigaction act = {};
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if (siginfo) {
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act.sa_flags = SA_SIGINFO;
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act.sa_sigaction = (decltype(act.sa_sigaction))handler;
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} else {
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act.sa_handler = (decltype(act.sa_handler))handler;
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}
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int ret = sigaction(SIGHUP, &act, prev);
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assert(ret == 0);
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if (handler == (T *)&sahandler) {
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sahandler_done = false;
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raise(SIGHUP);
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assert(sahandler_done);
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}
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if (handler == (T *)&sasigaction) {
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sasigaction_done = false;
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raise(SIGHUP);
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assert(sasigaction_done);
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}
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}
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template <typename T1, typename T2> void test(T1 *from, T2 *to) {
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install(from, nullptr);
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struct sigaction prev = {};
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install(to, &prev);
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bool siginfo_from = (from == (T1 *)&sasigaction);
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if (siginfo_from) {
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assert(prev.sa_flags & SA_SIGINFO);
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assert(prev.sa_sigaction == (decltype(prev.sa_sigaction))from);
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} else {
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assert((prev.sa_flags & SA_SIGINFO) == 0);
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assert(prev.sa_handler == (decltype(prev.sa_handler))from);
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}
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}
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template <typename T> void testAll(T *to) {
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test(&sahandler, to);
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test(&sasigaction, to);
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test(SIG_IGN, to);
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test(SIG_DFL, to);
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}
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int main(void) {
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testAll(&sahandler);
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testAll(&sasigaction);
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testAll(SIG_IGN);
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testAll(SIG_DFL);
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}
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