Overview
| Comment: | Only use _Unwind_Backtrace() if we have DWARF EH. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
2bdac84cf3a962423a6f134be2a0f32f |
| User & Date: | js on 2013-08-20 19:03:44 |
| Other Links: | manifest | tags |
Context
|
2013-08-22
| ||
| 12:38 | Fix ObjFW.h. check-in: cbe0df82d9 user: js tags: trunk | |
|
2013-08-20
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| 19:03 | Only use _Unwind_Backtrace() if we have DWARF EH. check-in: 2bdac84cf3 user: js tags: trunk | |
|
2013-08-15
| ||
| 20:23 | OFZIPArchiveEntry: Export the extra field. check-in: bf0db50a84 user: js tags: trunk | |
Changes
Modified src/exceptions/OFException.m from [84994201ec] to [9b10a5e2e6].
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#import "autorelease.h"
#if defined(_WIN32) && defined(OF_HAVE_SOCKETS)
# include <errno.h>
# include <winerror.h>
#endif
struct _Unwind_Context;
typedef enum {
_URC_OK = 0,
_URC_END_OF_STACK = 5
}_Unwind_Reason_Code;
struct backtrace_ctx {
void **backtrace;
uint_fast8_t i;
};
extern _Unwind_Reason_Code _Unwind_Backtrace(
_Unwind_Reason_Code(*)(struct _Unwind_Context*, void*), void*);
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#import "autorelease.h"
#if defined(_WIN32) && defined(OF_HAVE_SOCKETS)
# include <errno.h>
# include <winerror.h>
#endif
#ifdef HAVE_DWARF_EXCEPTIONS
struct _Unwind_Context;
typedef enum {
_URC_OK = 0,
_URC_END_OF_STACK = 5
}_Unwind_Reason_Code;
struct backtrace_ctx {
void **backtrace;
uint_fast8_t i;
};
extern _Unwind_Reason_Code _Unwind_Backtrace(
_Unwind_Reason_Code(*)(struct _Unwind_Context*, void*), void*);
# if defined(__arm__) || defined(__ARM__)
extern int _Unwind_VRS_Get(struct _Unwind_Context*, int, uint32_t, int, void*);
# else
extern uintptr_t _Unwind_GetIP(struct _Unwind_Context*);
# endif
static _Unwind_Reason_Code
backtrace_callback(struct _Unwind_Context *ctx, void *data)
{
struct backtrace_ctx *bt = data;
if (bt->i < OF_BACKTRACE_SIZE) {
# if defined(__arm__) || defined(__ARM__)
uintptr_t ip;
_Unwind_VRS_Get(ctx, 0, 15, 0, &ip);
bt->backtrace[bt->i++] = (void*)(ip & ~1);
# else
bt->backtrace[bt->i++] = (void*)_Unwind_GetIP(ctx);
# endif
return _URC_OK;
}
return _URC_END_OF_STACK;
}
#endif
#if defined(_WIN32) && defined(OF_HAVE_SOCKETS)
int
of_wsaerr_to_errno(int wsaerr)
{
switch (wsaerr) {
case WSAEACCES:
|
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@implementation OFException
+ (instancetype)exception
{
return [[[self alloc] init] autorelease];
}
- init
{
struct backtrace_ctx ctx;
self = [super init];
ctx.backtrace = _backtrace;
ctx.i = 0;
_Unwind_Backtrace(backtrace_callback, &ctx);
return self;
}
- (OFString*)description
{
return [OFString stringWithFormat:
@"An exception of type %@ occurred!", [self class]];
}
- (OFArray*)backtrace
{
OFMutableArray *backtrace = [OFMutableArray array];
void *pool = objc_autoreleasePoolPush();
uint_fast8_t i;
for (i = 0; i < OF_BACKTRACE_SIZE && _backtrace[i] != NULL; i++) {
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@implementation OFException
+ (instancetype)exception
{
return [[[self alloc] init] autorelease];
}
#ifdef HAVE_DWARF_EXCEPTIONS
- init
{
struct backtrace_ctx ctx;
self = [super init];
ctx.backtrace = _backtrace;
ctx.i = 0;
_Unwind_Backtrace(backtrace_callback, &ctx);
return self;
}
#endif
- (OFString*)description
{
return [OFString stringWithFormat:
@"An exception of type %@ occurred!", [self class]];
}
- (OFArray*)backtrace
{
#ifdef HAVE_DWARF_EXCEPTIONS
OFMutableArray *backtrace = [OFMutableArray array];
void *pool = objc_autoreleasePoolPush();
uint_fast8_t i;
for (i = 0; i < OF_BACKTRACE_SIZE && _backtrace[i] != NULL; i++) {
# ifdef HAVE_DLADDR
Dl_info info;
if (dladdr(_backtrace[i], &info)) {
ptrdiff_t offset = (char*)_backtrace[i] -
(char*)info.dli_saddr;
if (info.dli_sname == NULL)
info.dli_sname = "??";
[backtrace addObject:
[OFString stringWithFormat: @"%p <%s+%td> at %s",
_backtrace[i],
info.dli_sname, offset,
info.dli_fname]];
} else
# endif
[backtrace addObject:
[OFString stringWithFormat: @"%p", _backtrace[i]]];
}
objc_autoreleasePoolPop(pool);
[backtrace makeImmutable];
return backtrace;
#else
return nil;
#endif
}
@end
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