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author | das <das@noemail.net> | 2006-07-20 06:21:40 (GMT) |
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committer | das <das@noemail.net> | 2006-07-20 06:21:40 (GMT) |
commit | 8b7df9ac0470f1e2a1c1ad15dc7957c9c9d8dd2d (patch) | |
tree | 87aa93a682398fe04c4b734c7ea00049bf6fba02 /unix/tclLoadDyld.c | |
parent | f0603aa3a54f5ac7ad77585a652acbdc124fca7d (diff) | |
download | tcl-8b7df9ac0470f1e2a1c1ad15dc7957c9c9d8dd2d.zip tcl-8b7df9ac0470f1e2a1c1ad15dc7957c9c9d8dd2d.tar.gz tcl-8b7df9ac0470f1e2a1c1ad15dc7957c9c9d8dd2d.tar.bz2 |
* macosx/tclMacOSXNotify.c (Tcl_InitNotifier, Tcl_WaitForEvent): create
notifier thread lazily upon first call to Tcl_WaitForEvent() rather than
in Tcl_InitNotifier(). Allows calling exeve() in processes where the
event loop has not yet been run (Darwin's execve() fails in processes
with more than one thread), in particular allows embedders to call
fork() followed by execve(), previously the pthread_atfork() child
handler's call to Tcl_InitNotifier() would immediately recreate the
notifier thread in the child after a fork.
* macosx/tclMacOSXNotify.c (Tcl_InitNotifier): add support for
* unix/tclUnixFCmd.c (DoRenameFile, CopyFileAtts): weakly importing
* unix/tclUnixInit.c (TclpSetInitialEncodings): symbols not available
on OSX 10.2 or 10.3, enables binaires built on later OSX versions to run
on earlier ones.
* macosx/README: document how to enable weak-linking; cleanup.
* unix/tclUnixPort.h: add support for weak-linking; conditionalize
AvailabilityMacros.h inclusion; only disable realpath on 10.2 or earlier
when threads are enabled.
* unix/tclLoadDyld.c (TclpLoadMemoryGetBuffer): change runtime Darwin
* unix/tclUnixInit.c (TclpInitPlatform): release check to use
global initialized once.
* unix/tclUnixFCmd.c (DoRenameFile, TclpObjNormalizePath): add runtime
Darwin release check to determine if realpath is threadsafe.
* unix/configure.in: add check on Darwin for compiler support of weak
* unix/tcl.m4: import and for AvailabilityMacros.h header; move
Darwin specific checks & defines that are only relevant to the tcl build
out of tcl.m4; restrict framework option to Darwin; cleanup quoting.
* unix/configure: autoconf-2.13
* unix/tclLoadDyld.c (TclpLoadMemory):
* unix/tclUnixPipe.c (TclpCreateProcess): fix signed-with-unsigned
comparison and other warnings from gcc4 -Wextra.
FossilOrigin-Name: fc99321d6695fb452519db28ea6020c0fcaa3050
Diffstat (limited to 'unix/tclLoadDyld.c')
-rw-r--r-- | unix/tclLoadDyld.c | 32 |
1 files changed, 9 insertions, 23 deletions
diff --git a/unix/tclLoadDyld.c b/unix/tclLoadDyld.c index 121792f..10dfd54 100644 --- a/unix/tclLoadDyld.c +++ b/unix/tclLoadDyld.c @@ -12,7 +12,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclLoadDyld.c,v 1.14.2.7 2006/03/16 09:15:50 das Exp $ + * RCS: @(#) $Id: tclLoadDyld.c,v 1.14.2.8 2006/07/20 06:21:46 das Exp $ */ #include "tclInt.h" @@ -36,11 +36,7 @@ typedef struct Tcl_DyldLoadHandle { } Tcl_DyldLoadHandle; #ifdef TCL_LOAD_FROM_MEMORY -typedef struct ThreadSpecificData { - int haveLoadMemory; -} ThreadSpecificData; - -static Tcl_ThreadDataKey dataKey; +extern long tclMacOSXDarwinRelease; #endif /* @@ -391,23 +387,13 @@ TclpLoadMemoryGetBuffer(interp, size) Tcl_Interp *interp; /* Used for error reporting. */ int size; /* Size of desired buffer. */ { - ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); void *buffer = NULL; - if (!tsdPtr->haveLoadMemory) { - /* - * NSCreateObjectFileImageFromMemory is available but always fails - * prior to Darwin 7. - */ - - struct utsname name; - - if (!uname(&name)) { - long release = strtol(name.release, NULL, 10); - tsdPtr->haveLoadMemory = (release >= 7) ? 1 : -1; - } - } - if (tsdPtr->haveLoadMemory > 0) { + /* + * NSCreateObjectFileImageFromMemory is available but always fails + * prior to Darwin 7. + */ + if (tclMacOSXDarwinRelease >= 7) { /* * We must allocate the buffer using vm_allocate, because * NSCreateObjectFileImageFromMemory will dispose of it using @@ -480,14 +466,14 @@ TclpLoadMemory(interp, buffer, size, codeSize, loadHandle, unloadProcPtr) #define mh_size sizeof(struct mach_header_64) #endif - if (codeSize >= sizeof(struct fat_header) + if ((size_t) codeSize >= sizeof(struct fat_header) && fh->magic == OSSwapHostToBigInt32(FAT_MAGIC)) { /* * Fat binary, try to find mach_header for our architecture */ uint32_t fh_nfat_arch = OSSwapBigToHostInt32(fh->nfat_arch); - if (codeSize >= sizeof(struct fat_header) + + if ((size_t) codeSize >= sizeof(struct fat_header) + fh_nfat_arch * sizeof(struct fat_arch)) { void *fatarchs = buffer + sizeof(struct fat_header); CONST NXArchInfo *arch = NXGetLocalArchInfo(); |