051e84c4b4
This commit introduces the new `Component` interface in the form of the headers base/component.h and base/entrypoint.h. The os/server.h API has become merely a compatibilty wrapper and will eventually be removed. The same holds true for os/signal_rpc_dispatcher.h. The mechanism has moved to base/signal.h and is now called 'Signal_handler'. Since the patch shuffles headers around, please do a 'make clean' in the build directory. Issue #1832
85 lines
1.9 KiB
C++
85 lines
1.9 KiB
C++
/*
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* \brief Test for thread-local errno handling of hybrid Linux/Genode programs
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* \author Norman Feske
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* \date 2011-12-05
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*/
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/* Genode includes */
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#include <base/component.h>
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#include <base/thread.h>
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#include <base/printf.h>
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/* libc includes */
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#include <sys/stat.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdlib.h>
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enum { STACK_SIZE = 4096 };
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struct Thread : Genode::Thread<STACK_SIZE>
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{
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Genode::Lock &_barrier;
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Thread(Genode::Lock &barrier)
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: Genode::Thread<STACK_SIZE>("stat"), _barrier(barrier) { start(); }
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void entry()
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{
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/*
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* Stat syscall should return with errno ENOENT
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*/
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struct stat buf;
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int ret = stat("", &buf);
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Genode::printf("thread: stat returned %d, errno=%d\n", ret, errno);
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/*
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* Let main thread procees
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*/
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_barrier.unlock();
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}
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};
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static int exit_status;
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static void exit_on_suspended() { exit(exit_status); }
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Genode::size_t Component::stack_size() { return 16*1024*sizeof(long); }
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char const * Component::name() { return "lx_hybrid_errno"; }
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struct Unexpected_errno_change { };
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/*
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* Component implements classical main function in construct.
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*/
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void Component::construct(Genode::Environment &env)
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{
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Genode::printf("--- thread-local errno test ---\n");
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static Genode::Lock barrier(Genode::Lock::LOCKED);
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int const orig_errno = errno;
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Genode::printf("main: before thread creation, errno=%d\n", orig_errno);
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/* create thread, which modifies its thread-local errno value */
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static Thread thread(barrier);
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/* block until the thread performed a 'stat' syscall */
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barrier.lock();
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Genode::printf("main: after thread completed, errno=%d\n", errno);
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if (orig_errno != errno) {
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PERR("unexpected change of main thread's errno value");
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throw Unexpected_errno_change();
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}
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Genode::printf("--- finished thread-local errno test ---\n");
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exit_status = 0;
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env.ep().schedule_suspend(exit_on_suspended, nullptr);
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}
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