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-rw-r--r--lib/Support/APFloat.cpp6
-rw-r--r--lib/Support/APInt.cpp8
-rw-r--r--lib/Support/CMakeLists.txt4
-rw-r--r--lib/Support/Compression.cpp97
-rw-r--r--lib/Support/DataExtractor.cpp2
-rw-r--r--lib/Support/ErrorHandling.cpp16
-rw-r--r--lib/Support/FoldingSet.cpp4
-rw-r--r--lib/Support/Host.cpp28
-rw-r--r--lib/Support/LockFileManager.cpp37
-rw-r--r--lib/Support/MemoryBuffer.cpp2
-rw-r--r--lib/Support/PathV2.cpp31
-rw-r--r--lib/Support/PrettyStackTrace.cpp6
-rw-r--r--lib/Support/Program.cpp11
-rw-r--r--lib/Support/SmallPtrSet.cpp24
-rw-r--r--lib/Support/Unix/PathV2.inc4
-rw-r--r--lib/Support/Unix/Program.inc24
-rw-r--r--lib/Support/Unix/Signals.inc12
-rw-r--r--lib/Support/Unix/Watchdog.inc32
-rw-r--r--lib/Support/Watchdog.cpp23
-rw-r--r--lib/Support/Windows/Program.inc71
-rw-r--r--lib/Support/Windows/Signals.inc22
-rw-r--r--lib/Support/Windows/Watchdog.inc24
-rw-r--r--lib/Support/raw_ostream.cpp2
23 files changed, 429 insertions, 61 deletions
diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp
index 5b68fbb..6182e34 100644
--- a/lib/Support/APFloat.cpp
+++ b/lib/Support/APFloat.cpp
@@ -3311,10 +3311,8 @@ namespace {
significand = significand.udiv(divisor);
- // Truncate the significand down to its active bit count, but
- // don't try to drop below 32.
- unsigned newPrecision = std::max(32U, significand.getActiveBits());
- significand = significand.trunc(newPrecision);
+ // Truncate the significand down to its active bit count.
+ significand = significand.trunc(significand.getActiveBits());
}
diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp
index 07cb057..e853475 100644
--- a/lib/Support/APInt.cpp
+++ b/lib/Support/APInt.cpp
@@ -559,12 +559,12 @@ bool APInt::slt(const APInt& RHS) const {
if (lhsNeg) {
// Sign bit is set so perform two's complement to make it positive
lhs.flipAllBits();
- lhs++;
+ ++lhs;
}
if (rhsNeg) {
// Sign bit is set so perform two's complement to make it positive
rhs.flipAllBits();
- rhs++;
+ ++rhs;
}
// Now we have unsigned values to compare so do the comparison if necessary
@@ -2116,7 +2116,7 @@ void APInt::fromString(unsigned numbits, StringRef str, uint8_t radix) {
}
// If its negative, put it in two's complement form
if (isNeg) {
- (*this)--;
+ --(*this);
this->flipAllBits();
}
}
@@ -2197,7 +2197,7 @@ void APInt::toString(SmallVectorImpl<char> &Str, unsigned Radix,
// Flip the bits and add one to turn it into the equivalent positive
// value and put a '-' in the result.
Tmp.flipAllBits();
- Tmp++;
+ ++Tmp;
Str.push_back('-');
}
diff --git a/lib/Support/CMakeLists.txt b/lib/Support/CMakeLists.txt
index 5ba69fc..01565c5 100644
--- a/lib/Support/CMakeLists.txt
+++ b/lib/Support/CMakeLists.txt
@@ -7,6 +7,7 @@ add_llvm_library(LLVMSupport
BranchProbability.cpp
circular_raw_ostream.cpp
CommandLine.cpp
+ Compression.cpp
ConstantRange.cpp
ConvertUTF.c
ConvertUTFWrapper.cpp
@@ -83,6 +84,7 @@ add_llvm_library(LLVMSupport
Threading.cpp
TimeValue.cpp
Valgrind.cpp
+ Watchdog.cpp
Unix/Host.inc
Unix/Memory.inc
Unix/Mutex.inc
@@ -95,6 +97,7 @@ add_llvm_library(LLVMSupport
Unix/system_error.inc
Unix/ThreadLocal.inc
Unix/TimeValue.inc
+ Unix/Watchdog.inc
Windows/DynamicLibrary.inc
Windows/Host.inc
Windows/Memory.inc
@@ -108,4 +111,5 @@ add_llvm_library(LLVMSupport
Windows/system_error.inc
Windows/ThreadLocal.inc
Windows/TimeValue.inc
+ Windows/Watchdog.inc
)
diff --git a/lib/Support/Compression.cpp b/lib/Support/Compression.cpp
new file mode 100644
index 0000000..fd8a874
--- /dev/null
+++ b/lib/Support/Compression.cpp
@@ -0,0 +1,97 @@
+//===--- Compression.cpp - Compression implementation ---------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements compression functions.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/Compression.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Config/config.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MemoryBuffer.h"
+#if LLVM_ENABLE_ZLIB == 1 && HAVE_ZLIB_H
+#include <zlib.h>
+#endif
+
+using namespace llvm;
+
+#if LLVM_ENABLE_ZLIB == 1 && HAVE_LIBZ
+static int encodeZlibCompressionLevel(zlib::CompressionLevel Level) {
+ switch (Level) {
+ case zlib::NoCompression: return 0;
+ case zlib::BestSpeedCompression: return 1;
+ case zlib::DefaultCompression: return Z_DEFAULT_COMPRESSION;
+ case zlib::BestSizeCompression: return 9;
+ }
+ llvm_unreachable("Invalid zlib::CompressionLevel!");
+}
+
+static zlib::Status encodeZlibReturnValue(int ReturnValue) {
+ switch (ReturnValue) {
+ case Z_OK: return zlib::StatusOK;
+ case Z_MEM_ERROR: return zlib::StatusOutOfMemory;
+ case Z_BUF_ERROR: return zlib::StatusBufferTooShort;
+ case Z_STREAM_ERROR: return zlib::StatusInvalidArg;
+ case Z_DATA_ERROR: return zlib::StatusInvalidData;
+ default: llvm_unreachable("unknown zlib return status!");
+ }
+}
+
+bool zlib::isAvailable() { return true; }
+zlib::Status zlib::compress(StringRef InputBuffer,
+ OwningPtr<MemoryBuffer> &CompressedBuffer,
+ CompressionLevel Level) {
+ unsigned long CompressedSize = ::compressBound(InputBuffer.size());
+ OwningArrayPtr<char> TmpBuffer(new char[CompressedSize]);
+ int CLevel = encodeZlibCompressionLevel(Level);
+ Status Res = encodeZlibReturnValue(::compress2(
+ (Bytef *)TmpBuffer.get(), &CompressedSize,
+ (const Bytef *)InputBuffer.data(), InputBuffer.size(), CLevel));
+ if (Res == StatusOK) {
+ CompressedBuffer.reset(MemoryBuffer::getMemBufferCopy(
+ StringRef(TmpBuffer.get(), CompressedSize)));
+ // Tell MSan that memory initialized by zlib is valid.
+ __msan_unpoison(CompressedBuffer->getBufferStart(), CompressedSize);
+ }
+ return Res;
+}
+
+zlib::Status zlib::uncompress(StringRef InputBuffer,
+ OwningPtr<MemoryBuffer> &UncompressedBuffer,
+ size_t UncompressedSize) {
+ OwningArrayPtr<char> TmpBuffer(new char[UncompressedSize]);
+ Status Res = encodeZlibReturnValue(
+ ::uncompress((Bytef *)TmpBuffer.get(), (uLongf *)&UncompressedSize,
+ (const Bytef *)InputBuffer.data(), InputBuffer.size()));
+ if (Res == StatusOK) {
+ UncompressedBuffer.reset(MemoryBuffer::getMemBufferCopy(
+ StringRef(TmpBuffer.get(), UncompressedSize)));
+ // Tell MSan that memory initialized by zlib is valid.
+ __msan_unpoison(UncompressedBuffer->getBufferStart(), UncompressedSize);
+ }
+ return Res;
+}
+
+#else
+bool zlib::isAvailable() { return false; }
+zlib::Status zlib::compress(StringRef InputBuffer,
+ OwningPtr<MemoryBuffer> &CompressedBuffer,
+ CompressionLevel Level) {
+ return zlib::StatusUnsupported;
+}
+zlib::Status zlib::uncompress(StringRef InputBuffer,
+ OwningPtr<MemoryBuffer> &UncompressedBuffer,
+ size_t UncompressedSize) {
+ return zlib::StatusUnsupported;
+}
+#endif
+
diff --git a/lib/Support/DataExtractor.cpp b/lib/Support/DataExtractor.cpp
index 3d5cce0..a564d21 100644
--- a/lib/Support/DataExtractor.cpp
+++ b/lib/Support/DataExtractor.cpp
@@ -20,7 +20,7 @@ static T getU(uint32_t *offset_ptr, const DataExtractor *de,
uint32_t offset = *offset_ptr;
if (de->isValidOffsetForDataOfSize(offset, sizeof(val))) {
std::memcpy(&val, &Data[offset], sizeof(val));
- if (sys::isLittleEndianHost() != isLittleEndian)
+ if (sys::IsLittleEndianHost != isLittleEndian)
val = sys::SwapByteOrder(val);
// Advance the offset
diff --git a/lib/Support/ErrorHandling.cpp b/lib/Support/ErrorHandling.cpp
index d4382e5..f4b591e 100644
--- a/lib/Support/ErrorHandling.cpp
+++ b/lib/Support/ErrorHandling.cpp
@@ -49,21 +49,21 @@ void llvm::remove_fatal_error_handler() {
ErrorHandler = 0;
}
-void llvm::report_fatal_error(const char *Reason) {
- report_fatal_error(Twine(Reason));
+void llvm::report_fatal_error(const char *Reason, bool GenCrashDiag) {
+ report_fatal_error(Twine(Reason), GenCrashDiag);
}
-void llvm::report_fatal_error(const std::string &Reason) {
- report_fatal_error(Twine(Reason));
+void llvm::report_fatal_error(const std::string &Reason, bool GenCrashDiag) {
+ report_fatal_error(Twine(Reason), GenCrashDiag);
}
-void llvm::report_fatal_error(StringRef Reason) {
- report_fatal_error(Twine(Reason));
+void llvm::report_fatal_error(StringRef Reason, bool GenCrashDiag) {
+ report_fatal_error(Twine(Reason), GenCrashDiag);
}
-void llvm::report_fatal_error(const Twine &Reason) {
+void llvm::report_fatal_error(const Twine &Reason, bool GenCrashDiag) {
if (ErrorHandler) {
- ErrorHandler(ErrorHandlerUserData, Reason.str());
+ ErrorHandler(ErrorHandlerUserData, Reason.str(), GenCrashDiag);
} else {
// Blast the result out to stderr. We don't try hard to make sure this
// succeeds (e.g. handling EINTR) and we can't use errs() here because
diff --git a/lib/Support/FoldingSet.cpp b/lib/Support/FoldingSet.cpp
index 36e33b5..145f12d 100644
--- a/lib/Support/FoldingSet.cpp
+++ b/lib/Support/FoldingSet.cpp
@@ -101,7 +101,7 @@ void FoldingSetNodeID::AddString(StringRef String) {
// Otherwise do it the hard way.
// To be compatible with above bulk transfer, we need to take endianness
// into account.
- if (sys::isBigEndianHost()) {
+ if (sys::IsBigEndianHost) {
for (Pos += 4; Pos <= Size; Pos += 4) {
unsigned V = ((unsigned char)String[Pos - 4] << 24) |
((unsigned char)String[Pos - 3] << 16) |
@@ -110,7 +110,7 @@ void FoldingSetNodeID::AddString(StringRef String) {
Bits.push_back(V);
}
} else {
- assert(sys::isLittleEndianHost() && "Unexpected host endianness");
+ assert(sys::IsLittleEndianHost && "Unexpected host endianness");
for (Pos += 4; Pos <= Size; Pos += 4) {
unsigned V = ((unsigned char)String[Pos - 1] << 24) |
((unsigned char)String[Pos - 2] << 16) |
diff --git a/lib/Support/Host.cpp b/lib/Support/Host.cpp
index b9bbcb9..27c99c8 100644
--- a/lib/Support/Host.cpp
+++ b/lib/Support/Host.cpp
@@ -112,6 +112,21 @@ static bool GetX86CpuIDAndInfo(unsigned value, unsigned *rEAX,
#endif
}
+static bool OSHasAVXSupport() {
+#if defined(__GNUC__)
+ // Check xgetbv; this uses a .byte sequence instead of the instruction
+ // directly because older assemblers do not include support for xgetbv and
+ // there is no easy way to conditionally compile based on the assembler used.
+ int rEAX, rEDX;
+ __asm__ (".byte 0x0f, 0x01, 0xd0" : "=a" (rEAX), "=d" (rEDX) : "c" (0));
+#elif defined(_MSC_FULL_VER) && defined(_XCR_XFEATURE_ENABLED_MASK)
+ unsigned long long rEAX = _xgetbv(_XCR_XFEATURE_ENABLED_MASK);
+#else
+ int rEAX = 0; // Ensures we return false
+#endif
+ return (rEAX & 6) == 6;
+}
+
static void DetectX86FamilyModel(unsigned EAX, unsigned &Family,
unsigned &Model) {
Family = (EAX >> 8) & 0xf; // Bits 8 - 11
@@ -134,6 +149,11 @@ std::string sys::getHostCPUName() {
DetectX86FamilyModel(EAX, Family, Model);
bool HasSSE3 = (ECX & 0x1);
+ // If CPUID indicates support for XSAVE, XRESTORE and AVX, and XGETBV
+ // indicates that the AVX registers will be saved and restored on context
+ // switch, then we have full AVX support.
+ const unsigned AVXBits = (1 << 27) | (1 << 28);
+ bool HasAVX = ((ECX & AVXBits) == AVXBits) && OSHasAVXSupport();
GetX86CpuIDAndInfo(0x80000001, &EAX, &EBX, &ECX, &EDX);
bool Em64T = (EDX >> 29) & 0x1;
@@ -243,11 +263,15 @@ std::string sys::getHostCPUName() {
case 42: // Intel Core i7 processor. All processors are manufactured
// using the 32 nm process.
case 45:
- return "corei7-avx";
+ // Not all Sandy Bridge processors support AVX (such as the Pentium
+ // versions instead of the i7 versions).
+ return HasAVX ? "corei7-avx" : "corei7";
// Ivy Bridge:
case 58:
- return "core-avx-i";
+ // Not all Ivy Bridge processors support AVX (such as the Pentium
+ // versions instead of the i7 versions).
+ return HasAVX ? "core-avx-i" : "corei7";
case 28: // Most 45 nm Intel Atom processors
case 38: // 45 nm Atom Lincroft
diff --git a/lib/Support/LockFileManager.cpp b/lib/Support/LockFileManager.cpp
index 92d8b83..2917e27 100644
--- a/lib/Support/LockFileManager.cpp
+++ b/lib/Support/LockFileManager.cpp
@@ -174,8 +174,8 @@ void LockFileManager::waitForUnlock() {
Interval.tv_sec = 0;
Interval.tv_nsec = 1000000;
#endif
- // Don't wait more than an hour for the file to appear.
- const unsigned MaxSeconds = 3600;
+ // Don't wait more than five minutes for the file to appear.
+ unsigned MaxSeconds = 300;
bool LockFileGone = false;
do {
// Sleep for the designated interval, to allow the owning process time to
@@ -187,21 +187,48 @@ void LockFileManager::waitForUnlock() {
#else
nanosleep(&Interval, NULL);
#endif
- // If the lock file no longer exists, wait for the actual file.
bool Exists = false;
+ bool LockFileJustDisappeared = false;
+
+ // If the lock file is still expected to be there, check whether it still
+ // is.
if (!LockFileGone) {
if (!sys::fs::exists(LockFileName.str(), Exists) && !Exists) {
LockFileGone = true;
+ LockFileJustDisappeared = true;
Exists = false;
}
}
+
+ // If the lock file is no longer there, check if the original file is
+ // available now.
if (LockFileGone) {
- if (!sys::fs::exists(FileName.str(), Exists) && Exists)
+ if (!sys::fs::exists(FileName.str(), Exists) && Exists) {
return;
+ }
+
+ // The lock file is gone, so now we're waiting for the original file to
+ // show up. If this just happened, reset our waiting intervals and keep
+ // waiting.
+ if (LockFileJustDisappeared) {
+ MaxSeconds = 5;
+
+#if LLVM_ON_WIN32
+ Interval = 1;
+#else
+ Interval.tv_sec = 0;
+ Interval.tv_nsec = 1000000;
+#endif
+ continue;
+ }
}
- if (!processStillExecuting((*Owner).first, (*Owner).second))
+ // If we're looking for the lock file to disappear, but the process
+ // owning the lock died without cleaning up, just bail out.
+ if (!LockFileGone &&
+ !processStillExecuting((*Owner).first, (*Owner).second)) {
return;
+ }
// Exponentially increase the time we wait for the lock to be removed.
#if LLVM_ON_WIN32
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp
index 8042237..7c5ab96 100644
--- a/lib/Support/MemoryBuffer.cpp
+++ b/lib/Support/MemoryBuffer.cpp
@@ -72,10 +72,12 @@ static void CopyStringRef(char *Memory, StringRef Data) {
Memory[Data.size()] = 0; // Null terminate string.
}
+namespace {
struct NamedBufferAlloc {
StringRef Name;
NamedBufferAlloc(StringRef Name) : Name(Name) {}
};
+}
void *operator new(size_t N, const NamedBufferAlloc &Alloc) {
char *Mem = static_cast<char *>(operator new(N + Alloc.Name.size() + 1));
diff --git a/lib/Support/PathV2.cpp b/lib/Support/PathV2.cpp
index 41add96..ac53a9e 100644
--- a/lib/Support/PathV2.cpp
+++ b/lib/Support/PathV2.cpp
@@ -18,6 +18,9 @@
#include <cctype>
#include <cstdio>
#include <cstring>
+#ifdef __APPLE__
+#include <unistd.h>
+#endif
namespace {
using llvm::StringRef;
@@ -493,6 +496,27 @@ bool is_separator(char value) {
void system_temp_directory(bool erasedOnReboot, SmallVectorImpl<char> &result) {
result.clear();
+#ifdef __APPLE__
+ // On Darwin, use DARWIN_USER_TEMP_DIR or DARWIN_USER_CACHE_DIR.
+ int ConfName = erasedOnReboot? _CS_DARWIN_USER_TEMP_DIR
+ : _CS_DARWIN_USER_CACHE_DIR;
+ size_t ConfLen = confstr(ConfName, 0, 0);
+ if (ConfLen > 0) {
+ do {
+ result.resize(ConfLen);
+ ConfLen = confstr(ConfName, result.data(), result.size());
+ } while (ConfLen > 0 && ConfLen != result.size());
+
+ if (ConfLen > 0) {
+ assert(result.back() == 0);
+ result.pop_back();
+ return;
+ }
+
+ result.clear();
+ }
+#endif
+
// Check whether the temporary directory is specified by an environment
// variable.
const char *EnvironmentVariable;
@@ -765,8 +789,11 @@ file_magic identify_magic(StringRef magic) {
case '\177':
if (magic[1] == 'E' && magic[2] == 'L' && magic[3] == 'F') {
- if (magic.size() >= 18 && magic[17] == 0)
- switch (magic[16]) {
+ bool Data2MSB = magic[5] == 2;
+ unsigned high = Data2MSB ? 16 : 17;
+ unsigned low = Data2MSB ? 17 : 16;
+ if (magic.size() >= 18 && magic[high] == 0)
+ switch (magic[low]) {
default: break;
case 1: return file_magic::elf_relocatable;
case 2: return file_magic::elf_executable;
diff --git a/lib/Support/PrettyStackTrace.cpp b/lib/Support/PrettyStackTrace.cpp
index 21d56ad..23ee5ab 100644
--- a/lib/Support/PrettyStackTrace.cpp
+++ b/lib/Support/PrettyStackTrace.cpp
@@ -17,6 +17,7 @@
#include "llvm/Config/config.h" // Get autoconf configuration settings
#include "llvm/Support/Signals.h"
#include "llvm/Support/ThreadLocal.h"
+#include "llvm/Support/Watchdog.h"
#include "llvm/Support/raw_ostream.h"
#ifdef HAVE_CRASHREPORTERCLIENT_H
@@ -37,7 +38,10 @@ static unsigned PrintStack(const PrettyStackTraceEntry *Entry, raw_ostream &OS){
if (Entry->getNextEntry())
NextID = PrintStack(Entry->getNextEntry(), OS);
OS << NextID << ".\t";
- Entry->print(OS);
+ {
+ sys::Watchdog W(5);
+ Entry->print(OS);
+ }
return NextID+1;
}
diff --git a/lib/Support/Program.cpp b/lib/Support/Program.cpp
index 75bc282..201d5c0 100644
--- a/lib/Support/Program.cpp
+++ b/lib/Support/Program.cpp
@@ -29,12 +29,15 @@ Program::ExecuteAndWait(const Path& path,
const Path** redirects,
unsigned secondsToWait,
unsigned memoryLimit,
- std::string* ErrMsg) {
+ std::string* ErrMsg,
+ bool *ExecutionFailed) {
Program prg;
- if (prg.Execute(path, args, envp, redirects, memoryLimit, ErrMsg))
+ if (prg.Execute(path, args, envp, redirects, memoryLimit, ErrMsg)) {
+ if (ExecutionFailed) *ExecutionFailed = false;
return prg.Wait(path, secondsToWait, ErrMsg);
- else
- return -1;
+ }
+ if (ExecutionFailed) *ExecutionFailed = true;
+ return -1;
}
void
diff --git a/lib/Support/SmallPtrSet.cpp b/lib/Support/SmallPtrSet.cpp
index 3b53e9f..f0fed77 100644
--- a/lib/Support/SmallPtrSet.cpp
+++ b/lib/Support/SmallPtrSet.cpp
@@ -29,13 +29,9 @@ void SmallPtrSetImpl::shrink_and_clear() {
NumElements = NumTombstones = 0;
// Install the new array. Clear all the buckets to empty.
- CurArray = (const void**)malloc(sizeof(void*) * (CurArraySize+1));
+ CurArray = (const void**)malloc(sizeof(void*) * CurArraySize);
assert(CurArray && "Failed to allocate memory?");
memset(CurArray, -1, CurArraySize*sizeof(void*));
-
- // The end pointer, always valid, is set to a valid element to help the
- // iterator.
- CurArray[CurArraySize] = 0;
}
bool SmallPtrSetImpl::insert_imp(const void * Ptr) {
@@ -139,15 +135,11 @@ void SmallPtrSetImpl::Grow(unsigned NewSize) {
bool WasSmall = isSmall();
// Install the new array. Clear all the buckets to empty.
- CurArray = (const void**)malloc(sizeof(void*) * (NewSize+1));
+ CurArray = (const void**)malloc(sizeof(void*) * NewSize);
assert(CurArray && "Failed to allocate memory?");
CurArraySize = NewSize;
memset(CurArray, -1, NewSize*sizeof(void*));
- // The end pointer, always valid, is set to a valid element to help the
- // iterator.
- CurArray[NewSize] = 0;
-
// Copy over all the elements.
if (WasSmall) {
// Small sets store their elements in order.
@@ -180,7 +172,7 @@ SmallPtrSetImpl::SmallPtrSetImpl(const void **SmallStorage,
CurArray = SmallArray;
// Otherwise, allocate new heap space (unless we were the same size)
} else {
- CurArray = (const void**)malloc(sizeof(void*) * (that.CurArraySize+1));
+ CurArray = (const void**)malloc(sizeof(void*) * that.CurArraySize);
assert(CurArray && "Failed to allocate memory?");
}
@@ -188,7 +180,7 @@ SmallPtrSetImpl::SmallPtrSetImpl(const void **SmallStorage,
CurArraySize = that.CurArraySize;
// Copy over the contents from the other set
- memcpy(CurArray, that.CurArray, sizeof(void*)*(CurArraySize+1));
+ memcpy(CurArray, that.CurArray, sizeof(void*)*CurArraySize);
NumElements = that.NumElements;
NumTombstones = that.NumTombstones;
@@ -200,7 +192,7 @@ void SmallPtrSetImpl::CopyFrom(const SmallPtrSetImpl &RHS) {
if (isSmall() && RHS.isSmall())
assert(CurArraySize == RHS.CurArraySize &&
"Cannot assign sets with different small sizes");
-
+
// If we're becoming small, prepare to insert into our stack space
if (RHS.isSmall()) {
if (!isSmall())
@@ -209,9 +201,9 @@ void SmallPtrSetImpl::CopyFrom(const SmallPtrSetImpl &RHS) {
// Otherwise, allocate new heap space (unless we were the same size)
} else if (CurArraySize != RHS.CurArraySize) {
if (isSmall())
- CurArray = (const void**)malloc(sizeof(void*) * (RHS.CurArraySize+1));
+ CurArray = (const void**)malloc(sizeof(void*) * RHS.CurArraySize);
else
- CurArray = (const void**)realloc(CurArray, sizeof(void*)*(RHS.CurArraySize+1));
+ CurArray = (const void**)realloc(CurArray, sizeof(void*)*RHS.CurArraySize);
assert(CurArray && "Failed to allocate memory?");
}
@@ -219,7 +211,7 @@ void SmallPtrSetImpl::CopyFrom(const SmallPtrSetImpl &RHS) {
CurArraySize = RHS.CurArraySize;
// Copy over the contents from the other set
- memcpy(CurArray, RHS.CurArray, sizeof(void*)*(CurArraySize+1));
+ memcpy(CurArray, RHS.CurArray, sizeof(void*)*CurArraySize);
NumElements = RHS.NumElements;
NumTombstones = RHS.NumTombstones;
diff --git a/lib/Support/Unix/PathV2.inc b/lib/Support/Unix/PathV2.inc
index 11c5b05..7ef7dfd 100644
--- a/lib/Support/Unix/PathV2.inc
+++ b/lib/Support/Unix/PathV2.inc
@@ -432,9 +432,7 @@ rety_open_create:
if (SavedErrno == errc::file_exists)
goto retry_random_path;
// If path prefix doesn't exist, try to create it.
- if (SavedErrno == errc::no_such_file_or_directory &&
- !exists(path::parent_path(RandomPath)) &&
- !TriedToCreateParent) {
+ if (SavedErrno == errc::no_such_file_or_directory && !TriedToCreateParent) {
TriedToCreateParent = true;
StringRef p(RandomPath);
SmallString<64> dir_to_create;
diff --git a/lib/Support/Unix/Program.inc b/lib/Support/Unix/Program.inc
index 117151c..aa03d48 100644
--- a/lib/Support/Unix/Program.inc
+++ b/lib/Support/Unix/Program.inc
@@ -32,6 +32,9 @@
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
#ifdef HAVE_POSIX_SPAWN
#include <spawn.h>
#if !defined(__APPLE__)
@@ -409,4 +412,25 @@ error_code Program::ChangeStderrToBinary(){
return make_error_code(errc::success);
}
+bool llvm::sys::argumentsFitWithinSystemLimits(ArrayRef<const char*> Args) {
+ static long ArgMax = sysconf(_SC_ARG_MAX);
+
+ // System says no practical limit.
+ if (ArgMax == -1)
+ return true;
+
+ // Conservatively account for space required by environment variables.
+ ArgMax /= 2;
+
+ size_t ArgLength = 0;
+ for (ArrayRef<const char*>::iterator I = Args.begin(), E = Args.end();
+ I != E; ++I) {
+ ArgLength += strlen(*I) + 1;
+ if (ArgLength > size_t(ArgMax)) {
+ return false;
+ }
+ }
+ return true;
+}
+
}
diff --git a/lib/Support/Unix/Signals.inc b/lib/Support/Unix/Signals.inc
index b8be623..7580fb7 100644
--- a/lib/Support/Unix/Signals.inc
+++ b/lib/Support/Unix/Signals.inc
@@ -27,10 +27,12 @@
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
-#if HAVE_DLFCN_H && HAVE_CXXABI_H && __GNUG__
-#include <dlfcn.h>
+#if HAVE_CXXABI_H
#include <cxxabi.h>
#endif
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
#if HAVE_MACH_MACH_H
#include <mach/mach.h>
#endif
@@ -290,9 +292,13 @@ void llvm::sys::PrintStackTrace(FILE *FD) {
(int)(sizeof(void*) * 2) + 2, (unsigned long)StackTrace[i]);
if (dlinfo.dli_sname != NULL) {
- int res;
fputc(' ', FD);
+# if HAVE_CXXABI_H
+ int res;
char* d = abi::__cxa_demangle(dlinfo.dli_sname, NULL, NULL, &res);
+# else
+ char* d = NULL;
+# endif
if (d == NULL) fputs(dlinfo.dli_sname, FD);
else fputs(d, FD);
free(d);
diff --git a/lib/Support/Unix/Watchdog.inc b/lib/Support/Unix/Watchdog.inc
new file mode 100644
index 0000000..5d89c0e
--- /dev/null
+++ b/lib/Support/Unix/Watchdog.inc
@@ -0,0 +1,32 @@
+//===--- Unix/Watchdog.inc - Unix Watchdog Implementation -------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides the generic Unix implementation of the Watchdog class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+namespace llvm {
+ namespace sys {
+ Watchdog::Watchdog(unsigned int seconds) {
+#ifdef HAVE_UNISTD_H
+ alarm(seconds);
+#endif
+ }
+
+ Watchdog::~Watchdog() {
+#ifdef HAVE_UNISTD_H
+ alarm(0);
+#endif
+ }
+ }
+}
diff --git a/lib/Support/Watchdog.cpp b/lib/Support/Watchdog.cpp
new file mode 100644
index 0000000..724aa00
--- /dev/null
+++ b/lib/Support/Watchdog.cpp
@@ -0,0 +1,23 @@
+//===---- Watchdog.cpp - Implement Watchdog ---------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Watchdog class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/Watchdog.h"
+#include "llvm/Config/config.h"
+
+// Include the platform-specific parts of this class.
+#ifdef LLVM_ON_UNIX
+#include "Unix/Watchdog.inc"
+#endif
+#ifdef LLVM_ON_WIN32
+#include "Windows/Watchdog.inc"
+#endif
diff --git a/lib/Support/Windows/Program.inc b/lib/Support/Windows/Program.inc
index 691d6d4..619ae5d 100644
--- a/lib/Support/Windows/Program.inc
+++ b/lib/Support/Windows/Program.inc
@@ -126,20 +126,58 @@ static bool ArgNeedsQuotes(const char *Str) {
return Str[0] == '\0' || strpbrk(Str, "\t \"&\'()*<>\\`^|") != 0;
}
+/// CountPrecedingBackslashes - Returns the number of backslashes preceding Cur
+/// in the C string Start.
+static unsigned int CountPrecedingBackslashes(const char *Start,
+ const char *Cur) {
+ unsigned int Count = 0;
+ --Cur;
+ while (Cur >= Start && *Cur == '\\') {
+ ++Count;
+ --Cur;
+ }
+ return Count;
+}
+
+/// EscapePrecedingEscapes - Append a backslash to Dst for every backslash
+/// preceding Cur in the Start string. Assumes Dst has enough space.
+static char *EscapePrecedingEscapes(char *Dst, const char *Start,
+ const char *Cur) {
+ unsigned PrecedingEscapes = CountPrecedingBackslashes(Start, Cur);
+ while (PrecedingEscapes > 0) {
+ *Dst++ = '\\';
+ --PrecedingEscapes;
+ }
+ return Dst;
+}
/// ArgLenWithQuotes - Check whether argument needs to be quoted when calling
/// CreateProcess and returns length of quoted arg with escaped quotes
static unsigned int ArgLenWithQuotes(const char *Str) {
- unsigned int len = ArgNeedsQuotes(Str) ? 2 : 0;
+ const char *Start = Str;
+ bool Quoted = ArgNeedsQuotes(Str);
+ unsigned int len = Quoted ? 2 : 0;
while (*Str != '\0') {
- if (*Str == '\"')
- ++len;
+ if (*Str == '\"') {
+ // We need to add a backslash, but ensure that it isn't escaped.
+ unsigned PrecedingEscapes = CountPrecedingBackslashes(Start, Str);
+ len += PrecedingEscapes + 1;
+ }
+ // Note that we *don't* need to escape runs of backslashes that don't
+ // precede a double quote! See MSDN:
+ // http://msdn.microsoft.com/en-us/library/17w5ykft%28v=vs.85%29.aspx
++len;
++Str;
}
+ if (Quoted) {
+ // Make sure the closing quote doesn't get escaped by a trailing backslash.
+ unsigned PrecedingEscapes = CountPrecedingBackslashes(Start, Str);
+ len += PrecedingEscapes + 1;
+ }
+
return len;
}
@@ -180,20 +218,27 @@ Program::Execute(const Path& path,
for (unsigned i = 0; args[i]; i++) {
const char *arg = args[i];
+ const char *start = arg;
bool needsQuoting = ArgNeedsQuotes(arg);
if (needsQuoting)
*p++ = '"';
while (*arg != '\0') {
- if (*arg == '\"')
+ if (*arg == '\"') {
+ // Escape all preceding escapes (if any), and then escape the quote.
+ p = EscapePrecedingEscapes(p, start, arg);
*p++ = '\\';
+ }
*p++ = *arg++;
}
- if (needsQuoting)
+ if (needsQuoting) {
+ // Make sure our quote doesn't get escaped by a trailing backslash.
+ p = EscapePrecedingEscapes(p, start, arg);
*p++ = '"';
+ }
*p++ = ' ';
}
@@ -396,4 +441,20 @@ error_code Program::ChangeStderrToBinary(){
return make_error_code(errc::success);
}
+bool llvm::sys::argumentsFitWithinSystemLimits(ArrayRef<const char*> Args) {
+ // The documented max length of the command line passed to CreateProcess.
+ static const size_t MaxCommandStringLength = 32768;
+ size_t ArgLength = 0;
+ for (ArrayRef<const char*>::iterator I = Args.begin(), E = Args.end();
+ I != E; ++I) {
+ // Account for the trailing space for every arg but the last one and the
+ // trailing NULL of the last argument.
+ ArgLength += ArgLenWithQuotes(*I) + 1;
+ if (ArgLength > MaxCommandStringLength) {
+ return false;
+ }
+ }
+ return true;
+}
+
}
diff --git a/lib/Support/Windows/Signals.inc b/lib/Support/Windows/Signals.inc
index 3dd6660..b18b4d1 100644
--- a/lib/Support/Windows/Signals.inc
+++ b/lib/Support/Windows/Signals.inc
@@ -178,6 +178,19 @@ namespace llvm {
//===----------------------------------------------------------------------===//
#ifdef _MSC_VER
+/// AvoidMessageBoxHook - Emulates hitting "retry" from an "abort, retry,
+/// ignore" CRT debug report dialog. "retry" raises an exception which
+/// ultimately triggers our stack dumper.
+static int AvoidMessageBoxHook(int ReportType, char *Message, int *Return) {
+ // Set *Return to the retry code for the return value of _CrtDbgReport:
+ // http://msdn.microsoft.com/en-us/library/8hyw4sy7(v=vs.71).aspx
+ // This may also trigger just-in-time debugging via DebugBreak().
+ if (Return)
+ *Return = 1;
+ // Don't call _CrtDbgReport.
+ return TRUE;
+}
+
/// CRTReportHook - Function called on a CRT debugging event.
static int CRTReportHook(int ReportType, char *Message, int *Return) {
// Don't cause a DebugBreak() on return.
@@ -238,6 +251,15 @@ static void RegisterHandler() {
OldFilter = SetUnhandledExceptionFilter(LLVMUnhandledExceptionFilter);
SetConsoleCtrlHandler(LLVMConsoleCtrlHandler, TRUE);
+#ifdef _MSC_VER
+ const char *EnableMsgbox = getenv("LLVM_ENABLE_CRT_REPORT");
+ if (!EnableMsgbox || strcmp("0", EnableMsgbox) == 0) {
+ // Setting a report hook overrides the default behavior of popping an "abort,
+ // retry, or ignore" dialog.
+ _CrtSetReportHook(AvoidMessageBoxHook);
+ }
+#endif
+
// Environment variable to disable any kind of crash dialog.
if (getenv("LLVM_DISABLE_CRASH_REPORT")) {
#ifdef _MSC_VER
diff --git a/lib/Support/Windows/Watchdog.inc b/lib/Support/Windows/Watchdog.inc
new file mode 100644
index 0000000..fab2bdf
--- /dev/null
+++ b/lib/Support/Windows/Watchdog.inc
@@ -0,0 +1,24 @@
+//===--- Windows/Watchdog.inc - Windows Watchdog Implementation -*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides the generic Windows implementation of the Watchdog class.
+//
+//===----------------------------------------------------------------------===//
+
+// TODO: implement.
+// Currently this is only used by PrettyStackTrace which is also unimplemented
+// on Windows. Roughly, a Windows implementation would use CreateWaitableTimer
+// and a second thread to run the TimerAPCProc.
+
+namespace llvm {
+ namespace sys {
+ Watchdog::Watchdog(unsigned int seconds) {}
+ Watchdog::~Watchdog() {}
+ }
+}
diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp
index da26a37..a433088 100644
--- a/lib/Support/raw_ostream.cpp
+++ b/lib/Support/raw_ostream.cpp
@@ -517,7 +517,7 @@ raw_fd_ostream::~raw_fd_ostream() {
// has_error() and clear the error flag with clear_error() before
// destructing raw_ostream objects which may have errors.
if (has_error())
- report_fatal_error("IO failure on output stream.");
+ report_fatal_error("IO failure on output stream.", /*GenCrashDiag=*/false);
}
generated by cgit v1.1 at 2025-11-11 20:38:37 +0000