Support: Update documentation for Program functions

The docstrings were describing an older interface that has been replaced with
functions.

Also describe the performance characteristics of FindPro

Support: Update documentation for Program functions

The docstrings were describing an older interface that has been replaced with
functions.

Also describe the performance characteristics of FindProgramByName() and
ExecuteAndWait() explaining when it's best to avoid them.

llvm-svn: 196932

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Program.h: Fix \Note into \note. [-Wdocumentation]

llvm-svn: 191815

Add non-blocking Wait() for launched processes

- New ProcessInfo class to encapsulate information about child processes.
- Generalized the Wait() to support non-blocking wait on child processes.
- E

Add non-blocking Wait() for launched processes

- New ProcessInfo class to encapsulate information about child processes.
- Generalized the Wait() to support non-blocking wait on child processes.
- ExecuteNoWait() now returns a ProcessInfo object with information about
the launched child. Users will be able to use this object to
perform non-blocking wait.
- ExecuteNoWait() now accepts an ExecutionFailed param that tells if execution
failed or not.

These changes will allow users to implement basic process parallel
tools.

Differential Revision: http://llvm-reviews.chandlerc.com/D1728

llvm-svn: 191763

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Create a replacement for sys::Path::PathSeparator.

llvm-svn: 184806

Avoid using PathV1.h in Program.h.

llvm-svn: 183940

Add a version of sys::ExecuteAndWait that takes StringRefs.

llvm-svn: 183934

Have sys::FindProgramByName return a std::string.

llvm-svn: 183928

Remove the program class.

It was only used to implement ExecuteAndWait and ExecuteNoWait. Expose just
those two functions and make Execute and Wait implementations details.

llvm-svn: 183864

Add global versions of some Program static methods.

This is a temporary stepping stone for moving them out of Program.

llvm-svn: 183860

Include PathV1.h in files that use it.

This is preparation for replacing Path.h with PathV2.h.

llvm-svn: 183782

Add a function to check if an argument list is too long.

This will be used in clang to decide if it should create an @file or not. It
will be tested on the clang side.

Patch by Nathan Froyd.

llvm-

Add a function to check if an argument list is too long.

This will be used in clang to decide if it should create an @file or not. It
will be tested on the clang side.

Patch by Nathan Froyd.

llvm-svn: 179285

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Add a boolean parameter to the ExecuteAndWait static function to indicated
if execution failed. ExecuteAndWait returns -1 upon an execution failure, but
checking the return value isn't sufficient be

Add a boolean parameter to the ExecuteAndWait static function to indicated
if execution failed. ExecuteAndWait returns -1 upon an execution failure, but
checking the return value isn't sufficient because the wait command may
return -1 as well. This new parameter is to be used by the clang driver in a
subsequent commit.
Part of rdar://13362359

llvm-svn: 178087

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Fix include guards so they exactly match file names.

llvm-svn: 172025

Make it explicit that the only entry points to the Program object are
through the static helper functions. This is already true throughout the
codebase.

Slowly, I'm going to re-implement these stati

Make it explicit that the only entry points to the Program object are
through the static helper functions. This is already true throughout the
codebase.

Slowly, I'm going to re-implement these static helpers in terms of a new
process based interface which can expose more information, and remove
the program object entirely.

llvm-svn: 171335

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Remove an unused method on Program.

I'm simplifying this interface as much as I can before merging it with
the new process interface.

llvm-svn: 171334

Remove an unused method on the Program class.

llvm-svn: 171332

Use LLVM_DELETED_FUNCTION for copy constructors and copy assignment operators that aren't implemented.

llvm-svn: 164006

Support/Program: Make Change<stream>ToBinary return error_code.

llvm-svn: 146522

Have Program::Wait return -2 for crashed and timeouts instead of embedding
info in the error message. Per Dan's request.

llvm-svn: 131780

Bugpoint support for miscompilations that result in a crash.

This change allows bugpoint to pinpoint the "opt" pass and bitcode
segment responsible for a crash caused by miscompilation. At least it

Bugpoint support for miscompilations that result in a crash.

This change allows bugpoint to pinpoint the "opt" pass and bitcode
segment responsible for a crash caused by miscompilation. At least it
works well for me now, without having to create any custom execution
wrappers.

llvm-svn: 131186

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Fix a ton of comment typos found by codespell. Patch by
Luis Felipe Strano Moraes!

llvm-svn: 129558

Now to chant the magical incantation that will exorcise the System library
from LLVM forever:

grep -lR "llvm/System" * | grep -v .svn | xargs sed -ie 's#llvm/System#llvm/Support#g'

llvm-svn: 120314

Merge System into Support.

llvm-svn: 120298