diff options
Diffstat (limited to 'unix/tclUnixInit.c')
| -rw-r--r-- | unix/tclUnixInit.c | 516 |
1 files changed, 205 insertions, 311 deletions
diff --git a/unix/tclUnixInit.c b/unix/tclUnixInit.c index 013f270..1617cba 100644 --- a/unix/tclUnixInit.c +++ b/unix/tclUnixInit.c @@ -6,15 +6,20 @@ * Copyright (c) 1995-1997 Sun Microsystems, Inc. * Copyright (c) 1999 by Scriptics Corporation. * All rights reserved. - * - * RCS: @(#) $Id: tclUnixInit.c,v 1.62 2006/01/25 22:57:53 dkf Exp $ */ #include "tclInt.h" #include <stddef.h> #include <locale.h> #ifdef HAVE_LANGINFO -#include <langinfo.h> +# include <langinfo.h> +# ifdef __APPLE__ +# if defined(HAVE_WEAK_IMPORT) && MAC_OS_X_VERSION_MIN_REQUIRED < 1030 + /* Support for weakly importing nl_langinfo on Darwin. */ +# define WEAK_IMPORT_NL_LANGINFO + extern char *nl_langinfo(nl_item) WEAK_IMPORT_ATTRIBUTE; +# endif +# endif #endif #include <sys/resource.h> #if defined(__FreeBSD__) && defined(__GNUC__) @@ -26,73 +31,59 @@ # include <dlfcn.h> # endif #endif -#ifdef HAVE_COREFOUNDATION -#include <CoreFoundation/CoreFoundation.h> -#endif -/* - * Define this if you want to revert to the old behavior of never checking the - * stack. - */ +#ifdef __CYGWIN__ +DLLIMPORT extern __stdcall unsigned char GetVersionExW(void *); +DLLIMPORT extern __stdcall void *LoadLibraryW(const void *); +DLLIMPORT extern __stdcall void FreeLibrary(void *); +DLLIMPORT extern __stdcall void *GetProcAddress(void *, const char *); +DLLIMPORT extern __stdcall void GetSystemInfo(void *); -#undef TCL_NO_STACK_CHECK - -/* - * Define this if you want to see a lot of output regarding stack checking. - */ - -#undef TCL_DEBUG_STACK_CHECK +#define NUMPLATFORMS 4 +static const char *const platforms[NUMPLATFORMS] = { + "Win32s", "Windows 95", "Windows NT", "Windows CE" +}; -/* - * Values used to compute how much space is really available for Tcl's use for - * the stack. - * - * NOTE: Now I have some idea why the maximum stack size must be divided by 64 - * on FreeBSD with threads enabled to get a reasonably correct value. - * - * The getrlimit() function is documented to return the maximum stack size in - * bytes. However, with threads enabled, the pthread library does bad things - * to the stack size limits. First, the limits cannot be changed. Second, they - * appear to be reported incorrectly by a factor of about 64. - * - * The defines below may need to be adjusted if more platforms have this - * broken behavior with threads enabled. - */ +#define NUMPROCESSORS 11 +static const char *const processors[NUMPROCESSORS] = { + "intel", "mips", "alpha", "ppc", "shx", "arm", "ia64", "alpha64", "msil", + "amd64", "ia32_on_win64" +}; -#if defined(__FreeBSD__) -# define TCL_MAGIC_STACK_DIVISOR 64 -# define TCL_RESERVED_STACK_PAGES 3 +typedef struct _SYSTEM_INFO { + union { + DWORD dwOemId; + struct { + int wProcessorArchitecture; + int wReserved; + }; + }; + DWORD dwPageSize; + void *lpMinimumApplicationAddress; + void *lpMaximumApplicationAddress; + void *dwActiveProcessorMask; + DWORD dwNumberOfProcessors; + DWORD dwProcessorType; + DWORD dwAllocationGranularity; + int wProcessorLevel; + int wProcessorRevision; +} SYSTEM_INFO; + +typedef struct _OSVERSIONINFOW { + DWORD dwOSVersionInfoSize; + DWORD dwMajorVersion; + DWORD dwMinorVersion; + DWORD dwBuildNumber; + DWORD dwPlatformId; + wchar_t szCSDVersion[128]; +} OSVERSIONINFOW; #endif -#ifndef TCL_MAGIC_STACK_DIVISOR -#define TCL_MAGIC_STACK_DIVISOR 1 -#endif -#ifndef TCL_RESERVED_STACK_PAGES -#define TCL_RESERVED_STACK_PAGES 8 +#ifdef HAVE_COREFOUNDATION +#include <CoreFoundation/CoreFoundation.h> #endif /* - * Thread specific data for stack checking. - */ - -#ifndef TCL_NO_STACK_CHECK -typedef struct ThreadSpecificData { - int *outerVarPtr; /* The "outermost" stack frame pointer for - * this thread. */ - int initialised; /* Have we found what the stack size was? */ - int stackDetermineResult; /* What happened when we did that? */ - size_t stackSize; /* The size of the current stack. */ -} ThreadSpecificData; -static Tcl_ThreadDataKey dataKey; -#endif /* TCL_NO_STACK_CHECK */ - -#ifdef TCL_DEBUG_STACK_CHECK -#define STACK_DEBUG(args) printf args -#else -#define STACK_DEBUG(args) (void)0 -#endif /* TCL_DEBUG_STACK_CHECK */ - -/* * Tcl tries to use standard and homebrew methods to guess the right encoding * on the platform. However, there is always a final fallback, and this value * is it. Make sure it is a real Tcl encoding. @@ -125,8 +116,8 @@ static char pkgPath[sizeof(TCL_PACKAGE_PATH)+200] = TCL_PACKAGE_PATH; */ typedef struct LocaleTable { - CONST char *lang; - CONST char *encoding; + const char *lang; + const char *encoding; } LocaleTable; /* @@ -139,7 +130,7 @@ typedef struct LocaleTable { * among existing platforms. */ -static CONST LocaleTable localeTable[] = { +static const LocaleTable localeTable[] = { {"", "iso8859-1"}, {"ansi-1251", "cp1251"}, {"ansi_x3.4-1968", "iso8859-1"}, @@ -324,13 +315,25 @@ static CONST LocaleTable localeTable[] = { {"zh_tw.big5", "big5"}, }; -#ifndef TCL_NO_STACK_CHECK -static int GetStackSize(size_t *stackSizePtr); -#endif /* TCL_NO_STACK_CHECK */ #ifdef HAVE_COREFOUNDATION static int MacOSXGetLibraryPath(Tcl_Interp *interp, int maxPathLen, char *tclLibPath); #endif /* HAVE_COREFOUNDATION */ +#if defined(__APPLE__) && (defined(TCL_LOAD_FROM_MEMORY) || ( \ + defined(MAC_OS_X_VERSION_MIN_REQUIRED) && ( \ + (defined(TCL_THREADS) && MAC_OS_X_VERSION_MIN_REQUIRED < 1030) || \ + (defined(__LP64__) && MAC_OS_X_VERSION_MIN_REQUIRED < 1050) || \ + (defined(HAVE_COREFOUNDATION) && MAC_OS_X_VERSION_MIN_REQUIRED < 1050)\ + ))) +/* + * Need to check Darwin release at runtime in tclUnixFCmd.c and tclLoadDyld.c: + * initialize release global at startup from uname(). + */ +#define GET_DARWIN_RELEASE 1 +MODULE_SCOPE long tclMacOSXDarwinRelease; +long tclMacOSXDarwinRelease = 0; +#endif + /* *--------------------------------------------------------------------------- @@ -403,7 +406,8 @@ TclpInitPlatform(void) /* * Find local symbols. Don't report an error if we fail. */ - (void) dlopen (NULL, RTLD_NOW); /* INTL: Native. */ + + (void) dlopen(NULL, RTLD_NOW); /* INTL: Native. */ #endif /* @@ -425,6 +429,16 @@ TclpInitPlatform(void) */ setlocale(LC_NUMERIC, "C"); + +#ifdef GET_DARWIN_RELEASE + { + struct utsname name; + + if (!uname(&name)) { + tclMacOSXDarwinRelease = strtol(name.release, NULL, 10); + } + } +#endif } /* @@ -452,24 +466,12 @@ TclpInitLibraryPath( { #define LIBRARY_SIZE 32 Tcl_Obj *pathPtr, *objPtr; - CONST char *str; - Tcl_DString buffer, ds; - int pathc; - CONST char **pathv; - char installLib[LIBRARY_SIZE]; + const char *str; + Tcl_DString buffer; - Tcl_DStringInit(&ds); pathPtr = Tcl_NewObj(); /* - * Initialize the substrings used when locating an executable. The - * installLib variable computes the path as though the executable is - * installed. - */ - - sprintf(installLib, "lib/tcl%s", TCL_VERSION); - - /* * Look for the library relative to the TCL_LIBRARY env variable. If the * last dirname in the TCL_LIBRARY path does not match the last dirname in * the installLib variable, use the last dir name of installLib in @@ -481,12 +483,26 @@ TclpInitLibraryPath( str = Tcl_DStringValue(&buffer); if ((str != NULL) && (str[0] != '\0')) { + Tcl_DString ds; + int pathc; + const char **pathv; + char installLib[LIBRARY_SIZE]; + + Tcl_DStringInit(&ds); + + /* + * Initialize the substrings used when locating an executable. The + * installLib variable computes the path as though the executable is + * installed. + */ + + sprintf(installLib, "lib/tcl%s", TCL_VERSION); + /* * If TCL_LIBRARY is set, search there. */ - objPtr = Tcl_NewStringObj(str, -1); - Tcl_ListObjAppendElement(NULL, pathPtr, objPtr); + Tcl_ListObjAppendElement(NULL, pathPtr, Tcl_NewStringObj(str, -1)); Tcl_SplitPath(str, &pathc, &pathv); if ((pathc > 0) && (strcasecmp(installLib + 4, pathv[pathc-1]) != 0)) { @@ -500,17 +516,15 @@ TclpInitLibraryPath( pathv[pathc - 1] = installLib + 4; str = Tcl_JoinPath(pathc, pathv, &ds); - objPtr = Tcl_NewStringObj(str, Tcl_DStringLength(&ds)); - Tcl_ListObjAppendElement(NULL, pathPtr, objPtr); - Tcl_DStringFree(&ds); + Tcl_ListObjAppendElement(NULL, pathPtr, TclDStringToObj(&ds)); } - ckfree((char *) pathv); + ckfree(pathv); } /* * Finally, look for the library relative to the compiled-in path. This is * needed when users install Tcl with an exec-prefix that is different - * from the prtefix. + * from the prefix. */ { @@ -537,8 +551,8 @@ TclpInitLibraryPath( *encodingPtr = Tcl_GetEncoding(NULL, NULL); str = Tcl_GetStringFromObj(pathPtr, lengthPtr); - *valuePtr = ckalloc((unsigned int) (*lengthPtr)+1); - memcpy((VOID *) *valuePtr, (VOID *) str, (size_t)(*lengthPtr)+1); + *valuePtr = ckalloc((*lengthPtr) + 1); + memcpy(*valuePtr, str, (size_t)(*lengthPtr)+1); Tcl_DecrRefCount(pathPtr); } @@ -571,7 +585,7 @@ TclpSetInitialEncodings(void) { Tcl_DString encodingName; Tcl_SetSystemEncoding(NULL, - TclpGetEncodingNameFromEnvironment(&encodingName)); + Tcl_GetEncodingNameFromEnvironment(&encodingName)); Tcl_DStringFree(&encodingName); } @@ -581,9 +595,9 @@ TclpSetInterfaces(void) /* do nothing */ } -static CONST char * +static const char * SearchKnownEncodings( - CONST char *encoding) + const char *encoding) { int left = 0; int right = sizeof(localeTable)/sizeof(LocaleTable); @@ -604,12 +618,12 @@ SearchKnownEncodings( return NULL; } -CONST char * -TclpGetEncodingNameFromEnvironment( +const char * +Tcl_GetEncodingNameFromEnvironment( Tcl_DString *bufPtr) { - CONST char *encoding; - CONST char *knownEncoding; + const char *encoding; + const char *knownEncoding; Tcl_DStringInit(bufPtr); @@ -620,7 +634,11 @@ TclpGetEncodingNameFromEnvironment( */ #ifdef HAVE_LANGINFO - if (setlocale(LC_CTYPE, "") != NULL) { + if ( +#ifdef WEAK_IMPORT_NL_LANGINFO + nl_langinfo != NULL && +#endif + setlocale(LC_CTYPE, "") != NULL) { Tcl_DString ds; /* @@ -661,7 +679,7 @@ TclpGetEncodingNameFromEnvironment( } if (encoding != NULL) { - CONST char *p; + const char *p; Tcl_DString ds; Tcl_DStringInit(&ds); @@ -730,19 +748,47 @@ void TclpSetVariables( Tcl_Interp *interp) { -#ifndef NO_UNAME +#ifdef __CYGWIN__ + SYSTEM_INFO sysInfo; + static OSVERSIONINFOW osInfo; + static int osInfoInitialized = 0; + char buffer[TCL_INTEGER_SPACE * 2]; +#elif !defined(NO_UNAME) struct utsname name; #endif int unameOK; - CONST char *user; Tcl_DString ds; #ifdef HAVE_COREFOUNDATION char tclLibPath[MAXPATHLEN + 1]; +#if MAC_OS_X_VERSION_MAX_ALLOWED > 1020 + /* + * Set msgcat fallback locale to current CFLocale identifier. + */ + + CFLocaleRef localeRef; + + if (CFLocaleCopyCurrent != NULL && CFLocaleGetIdentifier != NULL && + (localeRef = CFLocaleCopyCurrent())) { + CFStringRef locale = CFLocaleGetIdentifier(localeRef); + + if (locale) { + char loc[256]; + + if (CFStringGetCString(locale, loc, 256, kCFStringEncodingUTF8)) { + if (!Tcl_CreateNamespace(interp, "::tcl::mac", NULL, NULL)) { + Tcl_ResetResult(interp); + } + Tcl_SetVar(interp, "::tcl::mac::locale", loc, TCL_GLOBAL_ONLY); + } + } + CFRelease(localeRef); + } +#endif /* MAC_OS_X_VERSION_MAX_ALLOWED > 1020 */ + if (MacOSXGetLibraryPath(interp, MAXPATHLEN, tclLibPath) == TCL_OK) { - CONST char *str; - Tcl_DString ds; + const char *str; CFBundleRef bundleRef; Tcl_SetVar(interp, "tclDefaultLibrary", tclLibPath, TCL_GLOBAL_ONLY); @@ -816,9 +862,39 @@ TclpSetVariables( #endif unameOK = 0; -#ifndef NO_UNAME +#ifdef __CYGWIN__ + unameOK = 1; + if (!osInfoInitialized) { + HANDLE handle = LoadLibraryW(L"NTDLL"); + int(__stdcall *getversion)(void *) = + (int(__stdcall *)(void *))GetProcAddress(handle, "RtlGetVersion"); + osInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW); + if (!getversion || getversion(&osInfo)) { + GetVersionExW(&osInfo); + } + if (handle) { + FreeLibrary(handle); + } + osInfoInitialized = 1; + } + + GetSystemInfo(&sysInfo); + + if (osInfo.dwPlatformId < NUMPLATFORMS) { + Tcl_SetVar2(interp, "tcl_platform", "os", + platforms[osInfo.dwPlatformId], TCL_GLOBAL_ONLY); + } + sprintf(buffer, "%d.%d", osInfo.dwMajorVersion, osInfo.dwMinorVersion); + Tcl_SetVar2(interp, "tcl_platform", "osVersion", buffer, TCL_GLOBAL_ONLY); + if (sysInfo.wProcessorArchitecture < NUMPROCESSORS) { + Tcl_SetVar2(interp, "tcl_platform", "machine", + processors[sysInfo.wProcessorArchitecture], + TCL_GLOBAL_ONLY); + } + +#elif !defined NO_UNAME if (uname(&name) >= 0) { - CONST char *native; + const char *native; unameOK = 1; @@ -860,12 +936,12 @@ TclpSetVariables( Tcl_SetVar2(interp, "tcl_platform", "osVersion", name.release, TCL_GLOBAL_ONLY|TCL_APPEND_VALUE); -#endif +#endif /* DJGPP */ } Tcl_SetVar2(interp, "tcl_platform", "machine", name.machine, TCL_GLOBAL_ONLY); } -#endif +#endif /* !NO_UNAME */ if (!unameOK) { Tcl_SetVar2(interp, "tcl_platform", "os", "", TCL_GLOBAL_ONLY); Tcl_SetVar2(interp, "tcl_platform", "osVersion", "", TCL_GLOBAL_ONLY); @@ -873,19 +949,30 @@ TclpSetVariables( } /* - * Copy USER or LOGNAME environment variable into tcl_platform(user). + * Copy the username of the real user (according to getuid()) into + * tcl_platform(user). */ - Tcl_DStringInit(&ds); - user = TclGetEnv("USER", &ds); - if (user == NULL) { - user = TclGetEnv("LOGNAME", &ds); - if (user == NULL) { + { + struct passwd *pwEnt = TclpGetPwUid(getuid()); + const char *user; + + if (pwEnt == NULL) { user = ""; + Tcl_DStringInit(&ds); /* ensure cleanliness */ + } else { + user = Tcl_ExternalToUtfDString(NULL, pwEnt->pw_name, -1, &ds); } + + Tcl_SetVar2(interp, "tcl_platform", "user", user, TCL_GLOBAL_ONLY); + Tcl_DStringFree(&ds); } - Tcl_SetVar2(interp, "tcl_platform", "user", user, TCL_GLOBAL_ONLY); - Tcl_DStringFree(&ds); + + /* + * Define what the platform PATH separator is. [TIP #315] + */ + + Tcl_SetVar2(interp, "tcl_platform","pathSeparator", ":", TCL_GLOBAL_ONLY); } /* @@ -910,7 +997,7 @@ TclpSetVariables( int TclpFindVariable( - CONST char *name, /* Name of desired environment variable + const char *name, /* Name of desired environment variable * (native). */ int *lengthPtr) /* Used to return length of name (for * successful searches) or number of non-NULL @@ -918,7 +1005,7 @@ TclpFindVariable( * searches). */ { int i, result = -1; - register CONST char *env, *p1, *p2; + register const char *env, *p1, *p2; Tcl_DString envString; Tcl_DStringInit(&envString); @@ -945,199 +1032,6 @@ TclpFindVariable( return result; } -/* - *---------------------------------------------------------------------- - * - * TclpCheckStackSpace -- - * - * Detect if we are about to blow the stack. Called before an evaluation - * can happen when nesting depth is checked. - * - * Results: - * 1 if there is enough stack space to continue; 0 if not. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -int -TclpCheckStackSpace(void) -{ -#ifdef TCL_NO_STACK_CHECK - - /* - * This function was normally unimplemented on Unix platforms and this - * implements old behavior, i.e. no stack checking performed. - */ - - return 1; - -#else - - ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); - /* Most variables are actually in a - * thread-specific data block to minimise the - * impact on the stack. */ - register ptrdiff_t stackUsed; - int localVar; /* Reference to somewhere on the local stack. - * This is declared last so it's as "deep" as - * possible. */ - - if (tsdPtr == NULL) { - /* - * This should probably be a panic(); if we're out of stack, we might - * have virtually no room to manoeuver at all. - */ - - Tcl_Panic("failed to get thread specific stack check data"); - } - - /* - * The first time through, we record the "outermost" stack frame. - */ - - if (tsdPtr->outerVarPtr == NULL) { - tsdPtr->outerVarPtr = &localVar; - } - - if (tsdPtr->initialised == 0) { - /* - * We appear to have not computed the stack size before. Attempt to - * retrieve it from either the current thread or, failing that, the - * process accounting limit. Note that we assume that stack sizes do - * not change throughout the lifespan of the thread/process; this is - * almost always true. - */ - - tsdPtr->stackDetermineResult = GetStackSize(&tsdPtr->stackSize); - tsdPtr->initialised = 1; - } - - switch (tsdPtr->stackDetermineResult) { - case TCL_BREAK: - STACK_DEBUG(("skipping stack check with failure\n")); - return 0; - case TCL_CONTINUE: - STACK_DEBUG(("skipping stack check with success\n")); - return 1; - } - - /* - * Sanity check to see if somehow the stack started going the - * other way. - */ - - if (&localVar > tsdPtr->outerVarPtr) { - stackUsed = (char *)&localVar - (char *)tsdPtr->outerVarPtr; - } else { - stackUsed = (char *)tsdPtr->outerVarPtr - (char *)&localVar; - } - - /* - * Now we perform the actual check. Are we about to blow our stack frame? - */ - - if (stackUsed < (ptrdiff_t) tsdPtr->stackSize) { - STACK_DEBUG(("stack OK\tin:%p\tout:%p\tuse:%04X\tmax:%04X\n", - &localVar, tsdPtr->outerVarPtr, stackUsed, tsdPtr->stackSize)); - return 1; - } else { - STACK_DEBUG(("stack OVERFLOW\tin:%p\tout:%p\tuse:%04X\tmax:%04X\n", - &localVar, tsdPtr->outerVarPtr, stackUsed, tsdPtr->stackSize)); - return 0; - } -#endif /* TCL_NO_STACK_CHECK */ -} - -/* - *---------------------------------------------------------------------- - * - * GetStackSize -- - * - * Discover what the stack size for the current thread/process actually - * is. Expects to only ever be called once per thread and then only at a - * point when there is a reasonable amount of space left on the current - * stack; TclpCheckStackSpace is called sufficiently frequently that that - * is true. - * - * Results: - * TCL_OK if the stack space was discovered, TCL_BREAK if the stack space - * was undiscoverable in a way that stack checks should fail, and - * TCL_CONTINUE if the stack space was undiscoverable in a way that stack - * checks should succeed. - * - * Side effects: - * None - * - *---------------------------------------------------------------------- - */ - -#ifndef TCL_NO_STACK_CHECK -static int -GetStackSize( - size_t *stackSizePtr) -{ - size_t rawStackSize; - struct rlimit rLimit; /* The result from getrlimit(). */ - -#ifdef TCL_THREADS - rawStackSize = (size_t) TclpThreadGetStackSize(); - if (rawStackSize == (size_t) -1) { - /* - * Some kind of confirmed error?! - */ - return TCL_BREAK; - } - if (rawStackSize > 0) { - goto finalSanityCheck; - } - - /* - * If we have zero or an error, try the system limits instead. After all, - * the pthread documentation states that threads should always be bound by - * the system stack size limit in any case. - */ -#endif /* TCL_THREADS */ - - if (getrlimit(RLIMIT_STACK, &rLimit) != 0) { - /* - * getrlimit() failed, just fail the whole thing. - */ - return TCL_BREAK; - } - if (rLimit.rlim_cur == RLIM_INFINITY) { - /* - * Limit is "infinite"; there is no stack limit. - */ - return TCL_CONTINUE; - } - rawStackSize = rLimit.rlim_cur; - - /* - * Final sanity check on the determined stack size. If we fail this, - * assume there are bogus values about and that we can't actually figure - * out what the stack size really is. - */ - -#ifdef TCL_THREADS /* Stop warning... */ - finalSanityCheck: -#endif - if (rawStackSize <= 0) { - return TCL_CONTINUE; - } - - /* - * Calculate a stack size with a safety margin. - */ - - *stackSizePtr = (rawStackSize / TCL_MAGIC_STACK_DIVISOR) - - (getpagesize() * TCL_RESERVED_STACK_PAGES); - - return TCL_OK; -} -#endif /* TCL_NO_STACK_CHECK */ /* *---------------------------------------------------------------------- |