static void segv_handler(int sig, siginfo_t *info, void *context)
{
jl_ptls_t ptls = jl_get_ptls_states();
assert(sig == SIGSEGV || sig == SIGBUS);
if (jl_addr_is_safepoint((uintptr_t)info->si_addr)) {
jl_unblock_signal(sig);
#ifdef JULIA_ENABLE_THREADING
jl_set_gc_and_wait();
// Do not raise sigint on worker thread
if (ptls->tid != 0)
return;
#endif
if (ptls->defer_signal) {
jl_safepoint_defer_sigint();
}
else if (jl_safepoint_consume_sigint()) {
jl_clear_force_sigint();
jl_throw_in_ctx(ptls, jl_interrupt_exception, context);
}
return;
}
if (ptls->safe_restore || is_addr_on_stack(ptls, info->si_addr)) { // stack overflow, or restarting jl_
jl_unblock_signal(sig);
jl_throw_in_ctx(ptls, jl_stackovf_exception, context);
}
else if (jl_is_on_sigstack(ptls, info->si_addr, context)) {
// This mainly happens when one of the finalizers during final cleanup
// on the signal stack has a deep/infinite recursion.
// There isn't anything more we can do
// (we are already corrupting that stack running this function)
// so just call `_exit` to terminate immediately.
jl_safe_printf("ERROR: Signal stack overflow, exit\n");
_exit(sig + 128);
}
else if (sig == SIGSEGV && info->si_code == SEGV_ACCERR) { // writing to read-only memory (e.g., mmap)
jl_unblock_signal(sig);
jl_throw_in_ctx(ptls, jl_readonlymemory_exception, context);
}
else {
#ifdef SEGV_EXCEPTION
jl_unblock_signal(sig);
jl_throw_in_ctx(ptls, jl_segv_exception, context);
#else
sigdie_handler(sig, info, context);
#endif
}
}
static void segv_handler(int sig, siginfo_t *info, void *context)
{
jl_ptls_t ptls = jl_get_ptls_states();
assert(sig == SIGSEGV || sig == SIGBUS);
if (jl_addr_is_safepoint((uintptr_t)info->si_addr)) {
jl_unblock_signal(sig);
#ifdef JULIA_ENABLE_THREADING
jl_set_gc_and_wait();
// Do not raise sigint on worker thread
if (ptls->tid != 0)
return;
#endif
if (jl_get_ptls_states()->defer_signal) {
jl_safepoint_defer_sigint();
}
else if (jl_safepoint_consume_sigint()) {
jl_clear_force_sigint();
jl_throw_in_ctx(jl_interrupt_exception, context);
}
return;
}
if (ptls->safe_restore || is_addr_on_stack(jl_get_ptls_states(), info->si_addr)) { // stack overflow, or restarting jl_
jl_unblock_signal(sig);
jl_throw_in_ctx(jl_stackovf_exception, context);
}
else if (sig == SIGSEGV && info->si_code == SEGV_ACCERR) { // writing to read-only memory (e.g., mmap)
jl_unblock_signal(sig);
jl_throw_in_ctx(jl_readonlymemory_exception, context);
}
else {
#ifdef SEGV_EXCEPTION
jl_unblock_signal(sig);
jl_throw_in_ctx(jl_segv_exception, context);
#else
sigdie_handler(sig, info, context);
#endif
}
}
static LONG WINAPI _exception_handler(struct _EXCEPTION_POINTERS *ExceptionInfo, int in_ctx)
{
jl_ptls_t ptls = jl_get_ptls_states();
if (ExceptionInfo->ExceptionRecord->ExceptionFlags == 0) {
switch (ExceptionInfo->ExceptionRecord->ExceptionCode) {
case EXCEPTION_INT_DIVIDE_BY_ZERO:
fpreset();
jl_throw_in_ctx(jl_diverror_exception,
ExceptionInfo->ContextRecord,in_ctx);
return EXCEPTION_CONTINUE_EXECUTION;
case EXCEPTION_STACK_OVERFLOW:
jl_throw_in_ctx(jl_stackovf_exception,
ExceptionInfo->ContextRecord,in_ctx&&pSetThreadStackGuarantee);
return EXCEPTION_CONTINUE_EXECUTION;
case EXCEPTION_ACCESS_VIOLATION:
if (jl_addr_is_safepoint(ExceptionInfo->ExceptionRecord->ExceptionInformation[1])) {
#ifdef JULIA_ENABLE_THREADING
jl_set_gc_and_wait();
// Do not raise sigint on worker thread
if (ptls->tid != 0)
return EXCEPTION_CONTINUE_EXECUTION;
#endif
if (ptls->defer_signal) {
jl_safepoint_defer_sigint();
}
else if (jl_safepoint_consume_sigint()) {
jl_clear_force_sigint();
jl_throw_in_ctx(jl_interrupt_exception,
ExceptionInfo->ContextRecord, in_ctx);
}
return EXCEPTION_CONTINUE_EXECUTION;
}
if (ExceptionInfo->ExceptionRecord->ExceptionInformation[0] == 1) { // writing to read-only memory (e.g. mmap)
jl_throw_in_ctx(jl_readonlymemory_exception,
ExceptionInfo->ContextRecord,in_ctx);
return EXCEPTION_CONTINUE_EXECUTION;
}
}
jl_safe_printf("\nPlease submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.\nException: ");
switch (ExceptionInfo->ExceptionRecord->ExceptionCode) {
case EXCEPTION_ACCESS_VIOLATION:
jl_safe_printf("EXCEPTION_ACCESS_VIOLATION"); break;
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
jl_safe_printf("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"); break;
case EXCEPTION_BREAKPOINT:
jl_safe_printf("EXCEPTION_BREAKPOINT"); break;
case EXCEPTION_DATATYPE_MISALIGNMENT:
jl_safe_printf("EXCEPTION_DATATYPE_MISALIGNMENT"); break;
case EXCEPTION_FLT_DENORMAL_OPERAND:
jl_safe_printf("EXCEPTION_FLT_DENORMAL_OPERAND"); break;
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
jl_safe_printf("EXCEPTION_FLT_DIVIDE_BY_ZERO"); break;
case EXCEPTION_FLT_INEXACT_RESULT:
jl_safe_printf("EXCEPTION_FLT_INEXACT_RESULT"); break;
case EXCEPTION_FLT_INVALID_OPERATION:
jl_safe_printf("EXCEPTION_FLT_INVALID_OPERATION"); break;
case EXCEPTION_FLT_OVERFLOW:
jl_safe_printf("EXCEPTION_FLT_OVERFLOW"); break;
case EXCEPTION_FLT_STACK_CHECK:
jl_safe_printf("EXCEPTION_FLT_STACK_CHECK"); break;
case EXCEPTION_FLT_UNDERFLOW:
jl_safe_printf("EXCEPTION_FLT_UNDERFLOW"); break;
case EXCEPTION_ILLEGAL_INSTRUCTION:
jl_safe_printf("EXCEPTION_ILLEGAL_INSTRUCTION"); break;
case EXCEPTION_IN_PAGE_ERROR:
jl_safe_printf("EXCEPTION_IN_PAGE_ERROR"); break;
case EXCEPTION_INT_DIVIDE_BY_ZERO:
jl_safe_printf("EXCEPTION_INT_DIVIDE_BY_ZERO"); break;
case EXCEPTION_INT_OVERFLOW:
jl_safe_printf("EXCEPTION_INT_OVERFLOW"); break;
case EXCEPTION_INVALID_DISPOSITION:
jl_safe_printf("EXCEPTION_INVALID_DISPOSITION"); break;
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
jl_safe_printf("EXCEPTION_NONCONTINUABLE_EXCEPTION"); break;
case EXCEPTION_PRIV_INSTRUCTION:
jl_safe_printf("EXCEPTION_PRIV_INSTRUCTION"); break;
case EXCEPTION_SINGLE_STEP:
jl_safe_printf("EXCEPTION_SINGLE_STEP"); break;
case EXCEPTION_STACK_OVERFLOW:
jl_safe_printf("EXCEPTION_STACK_OVERFLOW"); break;
default:
jl_safe_printf("UNKNOWN"); break;
}
jl_safe_printf(" at 0x%Ix -- ", (size_t)ExceptionInfo->ExceptionRecord->ExceptionAddress);
jl_gdblookup((uintptr_t)ExceptionInfo->ExceptionRecord->ExceptionAddress);
jl_critical_error(0, ExceptionInfo->ContextRecord,
ptls->bt_data, &ptls->bt_size);
static int recursion = 0;
if (recursion++)
exit(1);
else
jl_exit(1);
}
return EXCEPTION_CONTINUE_SEARCH;
}