61f9b8ade8
* Per Instance signal handler * add custom signal handler test * add instance signal handling to callable.rs * extend signal handler test to test callable.rs * test multiple instances, multiple signal handlers * support more than one current instance import_calling_export.rs is a good example of why this is needed: execution switches from one instance to another before the first one has finished running * add another custom signal handler test case * move and update custom signal handler tests * fmt * fix libc version to 0.2 * call the correct instance signal handler We keep a stack of instances so should call last() not first(). * move custom signal handler test to top level dir * windows/mac signal handling wip * os-specific signal handling wip * disable custom signal handler test on windows * fmt * unify signal handling on mac and linux
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
#ifndef signal_handlers_h
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#define signal_handlers_h
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#include <stdint.h>
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#include <setjmp.h>
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#ifndef __cplusplus
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#include <stdbool.h>
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#endif
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#include <signal.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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int8_t CheckIfTrapAtAddress(const uint8_t* pc);
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// Record the Trap code and wasm bytecode offset in TLS somewhere
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void RecordTrap(const uint8_t* pc, bool reset_guard_page);
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#if defined(_WIN32)
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#include <windows.h>
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#include <winternl.h>
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bool InstanceSignalHandler(LPEXCEPTION_POINTERS);
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#elif defined(USE_APPLE_MACH_PORTS)
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bool InstanceSignalHandler(int, siginfo_t *, void *);
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#else
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#include <sys/ucontext.h>
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bool InstanceSignalHandler(int, siginfo_t *, ucontext_t *);
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#endif
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void* EnterScope(void*);
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void LeaveScope(void*);
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void* GetScope(void);
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void Unwind(void);
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// This function performs the low-overhead signal handler initialization that we
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// want to do eagerly to ensure a more-deterministic global process state. This
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// is especially relevant for signal handlers since handler ordering depends on
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// installation order: the wasm signal handler must run *before* the other crash
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// handlers and since POSIX signal handlers work LIFO, this function needs to be
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// called at the end of the startup process, after other handlers have been
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// installed. This function can thus be called multiple times, having no effect
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// after the first call.
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int
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EnsureEagerSignalHandlers(void);
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// Assuming EnsureEagerProcessSignalHandlers() has already been called,
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// this function performs the full installation of signal handlers which must
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// be performed per-thread. This operation may incur some overhead and
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// so should be done only when needed to use wasm.
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int
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EnsureDarwinMachPorts(void);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // signal_handlers_h
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