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History

Benjamin Kramer 88e1073516 BumpPtrAllocator: Make sure threshold cannot be initialized with a value smaller than the slab size. This replaces r151834 with a simpler fix. llvm-svn: 151842		2012-03-01 22:10:16 +00:00
..
Unix	Change default error_code ctor to a 'named ctor' so it's more self-documenting.	2012-02-09 19:24:12 +00:00
Windows	Change default error_code ctor to a 'named ctor' so it's more self-documenting.	2012-02-09 19:24:12 +00:00
Allocator.cpp	BumpPtrAllocator: Make sure threshold cannot be initialized with a value smaller than the slab size.	2012-03-01 22:10:16 +00:00
APFloat.cpp	APFloat::toString(): Fix overrun at scanning.	2012-02-19 03:18:29 +00:00
APInt.cpp	Fix undefined behavior.	2012-02-24 19:06:15 +00:00
APSInt.cpp
Atomic.cpp
BlockFrequency.cpp
BranchProbability.cpp
circular_raw_ostream.cpp
CMakeLists.txt	Rewrite LLVM's generalized support library for hashing to follow the API	2012-03-01 18:55:25 +00:00
CommandLine.cpp	Correct use of const in ParseCommandLineOptions	2012-02-07 19:36:01 +00:00
ConstantRange.cpp	Convert assert(0) to llvm_unreachable	2012-02-07 05:05:23 +00:00
COPYRIGHT.regex
CrashRecoveryContext.cpp	Remove dead code. Improve llvm_unreachable text. Simplify some control flow.	2012-02-19 11:37:01 +00:00
DAGDeltaAlgorithm.cpp
DataExtractor.cpp	Remove extra semi-colons.	2012-02-22 17:25:00 +00:00
DataStream.cpp	Change default error_code ctor to a 'named ctor' so it's more self-documenting.	2012-02-09 19:24:12 +00:00
Debug.cpp
DeltaAlgorithm.cpp
Disassembler.cpp
Dwarf.cpp	Add new tag and an attribute to support debug info for objective-c property.	2012-02-03 23:57:08 +00:00
DynamicLibrary.cpp
Errno.cpp
ErrorHandling.cpp
FileUtilities.cpp	Change default error_code ctor to a 'named ctor' so it's more self-documenting.	2012-02-09 19:24:12 +00:00
FoldingSet.cpp
FormattedStream.cpp
GraphWriter.cpp
Hashing.cpp	Add the source file with trivial definitions in it that was missing from	2012-03-01 18:58:59 +00:00
Host.cpp	Remove unreachable code. (replace with llvm_unreachable to help GCC where necessary)	2012-01-17 04:43:56 +00:00
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
JSONParser.cpp	fix typo	2012-02-06 05:29:29 +00:00
LLVMBuild.txt
LockFileManager.cpp	Move Clang's file-level locking facility over to LLVM's support	2012-01-29 20:15:10 +00:00
Makefile
ManagedStatic.cpp
Memory.cpp
MemoryBuffer.cpp	Change default error_code ctor to a 'named ctor' so it's more self-documenting.	2012-02-09 19:24:12 +00:00
MemoryObject.cpp	Make MemoryObject accessor members const again	2012-02-29 01:09:06 +00:00
Mutex.cpp	Persuade GCC that there is nothing worth warning about here (there isn't).	2012-02-05 14:20:11 +00:00
Path.cpp
PathV2.cpp	Support/PathV2: Fix namespace qualifier in make_absolute(), for Win32.	2012-02-29 00:46:46 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp
Process.cpp
Program.cpp
raw_os_ostream.cpp
raw_ostream.cpp
README.txt.system
regcclass.h
regcname.h
regcomp.c
regengine.inc
regerror.c
regex2.h
regex_impl.h
Regex.cpp
regexec.c
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp	Remove dead code.	2012-01-15 01:09:13 +00:00
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp	Removing unused default switch cases in switches over enums that already account for all enumeration values explicitly.	2012-01-16 23:24:27 +00:00
Statistic.cpp
StreamableMemoryObject.cpp	Make MemoryObject accessor members const again	2012-02-29 01:09:06 +00:00
StringExtras.cpp	Move the implementation of StringRef::split out of StringExtras.cpp	2012-02-21 12:00:25 +00:00
StringMap.cpp
StringPool.cpp
StringRef.cpp	Workaround a miscompilation by gcc-4.3 that showed up as a failure	2012-02-24 09:01:34 +00:00
system_error.cpp
SystemUtils.cpp
TargetRegistry.cpp	revert r147542 after comments from Joerg Sonnenberger	2012-01-05 18:28:46 +00:00
Threading.cpp
ThreadLocal.cpp
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp	Support was removed from LLVM's MIPS backend for the PSP variant of that	2012-02-22 11:32:54 +00:00
Twine.cpp
Valgrind.cpp

README.txt.system

Design Of lib/System
====================

The software in this directory is designed to completely shield LLVM from any
and all operating system specific functionality. It is not intended to be a
complete operating system wrapper (such as ACE), but only to provide the
functionality necessary to support LLVM.

The software located here, of necessity, has very specific and stringent design
rules. Violation of these rules means that cracks in the shield could form and
the primary goal of the library is defeated. By consistently using this library,
LLVM becomes more easily ported to new platforms since the only thing requiring
porting is this library.

Complete documentation for the library can be found in the file:
  llvm/docs/SystemLibrary.html
or at this URL:
  http://llvm.org/docs/SystemLibrary.html

While we recommend that you read the more detailed documentation, for the
impatient, here's a high level summary of the library's requirements.

 1. No system header files are to be exposed through the interface.
 2. Std C++ and Std C header files are okay to be exposed through the interface.
 3. No exposed system-specific functions.
 4. No exposed system-specific data.
 5. Data in lib/System classes must use only simple C++ intrinsic types.
 6. Errors are handled by returning "true" and setting an optional std::string
 7. Library must not throw any exceptions, period.
 8. Interface functions must not have throw() specifications.
 9. No duplicate function impementations are permitted within an operating
    system class.

To accomplish these requirements, the library has numerous design criteria that
must be satisfied. Here's a high level summary of the library's design criteria:

 1. No unused functionality (only what LLVM needs)
 2. High-Level Interfaces
 3. Use Opaque Classes
 4. Common Implementations
 5. Multiple Implementations
 6. Minimize Memory Allocation
 7. No Virtual Methods