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Add support for a user supplied pointer argument to llvm_install_error_handler.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78553 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2009-08-10 03:36:26 +00:00
parent 64a6b39417
commit ca15f3d6d6
2 changed files with 20 additions and 10 deletions
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22
include/llvm/Support/ErrorHandling.h
View File

@ -22,19 +22,25 @@ namespace llvm {
class Twine;
/// An error handler callback.
typedef void (*llvm_error_handler_t)(const std::string& reason);
typedef void (*llvm_error_handler_t)(void *user_data,
const std::string& reason);
/// Installs a new error handler: this function will be called whenever a
/// serious error is encountered by LLVM.
/// llvm_instal_error_handler - Installs a new error handler to be used
/// whenever a serious (non-recoverable) error is encountered by LLVM.
///
/// If you are using llvm_start_multithreaded, you should register the handler
/// before doing that.
///
/// If no error handler is installed the default is to print the error message
/// to stderr, and call exit(1).
/// If an error handler is installed then it is the handler's responsibility
/// to log the message, it will no longer be printed to stderr.
/// If the error handler returns, then exit(1) will be called.
void llvm_install_error_handler(llvm_error_handler_t handler);
/// to stderr, and call exit(1). If an error handler is installed then it is
/// the handler's responsibility to log the message, it will no longer be
/// printed to stderr. If the error handler returns, then exit(1) will be
/// called.
///
/// \param user_data - An argument which will be passed to the install error
/// handler.
void llvm_install_error_handler(llvm_error_handler_t handler,
void *user_data = 0);
/// Restores default error handling behaviour.
/// This must not be called between llvm_start_multithreaded() and

8
lib/Support/ErrorHandling.cpp
View File

@ -23,12 +23,16 @@ using namespace llvm;
using namespace std;
static llvm_error_handler_t ErrorHandler = 0;
static void *ErrorHandlerUserData = 0;
namespace llvm {
void llvm_install_error_handler(llvm_error_handler_t handler) {
void llvm_install_error_handler(llvm_error_handler_t handler,
void *user_data) {
assert(!llvm_is_multithreaded() &&
"Cannot register error handlers after starting multithreaded mode!\n");
assert(!ErrorHandler && "Error handler already registered!\n");
ErrorHandler = handler;
ErrorHandlerUserData = user_data;
}
void llvm_remove_error_handler(void) {
@ -47,7 +51,7 @@ void llvm_report_error(const Twine &reason) {
if (!ErrorHandler) {
errs() << "LLVM ERROR: " << reason << "\n";
} else {
ErrorHandler(reason.str());
ErrorHandler(ErrorHandlerUserData, reason.str());
}
exit(1);
}