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Define SIGUSR1 for hybrid Linux/Genode programs

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This patch fixes the 'lx_hybrid_pthread_ipc.run' test. In order to use
the 'Genode::Lock' we need to set the SIGUSR1 handler to an empty handler.
Normally, this happens when creating a thread via the Genode API. But as
this test creates a thread via the pthread library and thereby bypasses
the Genode API, the signal handler remained unset.
This commit is contained in:
Norman Feske 2012-11-06 17:32:30 +01:00
parent 21c22b8b5b
commit 4b140a5202
1 changed files with 8 additions and 3 deletions
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11
base-linux/src/platform/lx_hybrid.cc
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@ -40,6 +40,8 @@ int genode___cxa_atexit(void (*func)(void*), void *arg, void *dso)
extern char **environ;
extern char **lx_environ;
static void empty_signal_handler(int) { }
/*
* This function must be called before any other static constructor in the Genode
* application, so it gets the highest priority (lowest priority number >100)
@ -47,6 +49,12 @@ extern char **lx_environ;
__attribute__((constructor(101))) void lx_hybrid_init()
{
lx_environ = environ;
/*
* Set signal handler such that canceled system calls get not
* transparently retried after a signal gets received.
*/
lx_sigaction(LX_SIGUSR1, empty_signal_handler);
}
/*
@ -158,9 +166,6 @@ namespace Genode {
}
static void empty_signal_handler(int) { }
/**
* Return Linux-specific extension of the Env::CPU session interface
*/