Expose install_fatal_error_handler() through the C API.

I expose the API with some caveats:

- The C++ API involves a traditional void* opaque pointer for the fatal 
error callback.  The C API doesn’t do this.  I don’t think that the void* 
opaque pointer makes any sense since this is a global callback - there will 
only be one of them.  So if you need to pass some data to your callback, 
just put it in a global variable.

- The bindings will ignore the gen_crash_diag boolean.  I ignore it because 
(1) I don’t know what it does, (2) it’s not documented AFAIK, and (3) I 
couldn’t imagine any use for it.  I made the gut call that it probably 
wasn’t important enough to expose through the C API.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192864 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Filip Pizlo
2013-10-17 01:38:28 +00:00
parent adbd3ae1df
commit 0739140b05
2 changed files with 33 additions and 0 deletions

View File

@ -20,6 +20,7 @@
#include "llvm/Support/Signals.h"
#include "llvm/Support/Threading.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm-c/Core.h"
#include <cassert>
#include <cstdlib>
@ -102,3 +103,19 @@ void llvm::llvm_unreachable_internal(const char *msg, const char *file,
LLVM_BUILTIN_UNREACHABLE;
#endif
}
static void bindingsErrorHandler(void *user_data, const std::string& reason,
bool gen_crash_diag) {
LLVMFatalErrorHandler handler =
reinterpret_cast<LLVMFatalErrorHandler>(user_data);
handler(reason.c_str());
}
void LLVMInstallFatalErrorHandler(LLVMFatalErrorHandler Handler) {
install_fatal_error_handler(
bindingsErrorHandler, reinterpret_cast<void*>(Handler));
}
void LLVMResetFatalErrorHandler() {
remove_fatal_error_handler();
}