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Author SHA1 Message Date
Marcos Pividori 178fe58745 [libFuzzer] Clean up headers and file formatting of LibFuzzer files. 
Reorganize #includes to follow LLVM Coding Standards.
Include some missing headers. Required to use `Printf()`.

Aside from that, this patch contains no functional change.
It is purely a re-organization.

Differential Revision: https://reviews.llvm.org/D27363

llvm-svn: 289560
 2016-12-13 17:46:11 +00:00
Zachary Turner 24a148b1d4 [LibFuzzer] Split up some functions among different headers. 
In an effort to get libfuzzer working on Windows, we need to make
a distinction between what functions require platform specific
code (e.g. different code on Windows vs Linux) and what code
doesn't.  IO functions, for example, tend to be platform
specific.

This patch separates out some of the functions which will need
to have platform specific implementations into different headers,
so that we can then provide different implementations for each
platform.

Aside from that, this patch contains no functional change.  It
is purely a re-organization.

Patch by Marcos Pividori
Differential Revision: https://reviews.llvm.org/D27230

llvm-svn: 288264
 2016-11-30 19:06:14 +00:00
Kostya Serebryany 8658618ea0 [libFuzzer] more refactoring 
llvm-svn: 282113
 2016-09-21 21:17:23 +00:00
Dan Liew ed3c9cae49 [LibFuzzer] Fix `-jobs=<N>` where <N> > 1 and the number of workers is > 1 on macOS. 
The original `ExecuteCommand()` called `system()` from the C library.
The C library implementation of this on macOS contains a mutex which
serializes calls to `system()`. This prevented the `-jobs=` flag
from running copies of the fuzzing binary in parallel which is
the opposite of what is intended.

To fix this on macOS an alternative implementation of `ExecuteCommand()`
is provided that can be used concurrently. This is provided in
`FuzzerUtilDarwin.cpp` which is guarded to only compile code on Apple
platforms. The existing implementation has been moved to a new file
`FuzzerUtilLinux.cpp` which is guarded to only compile code on Linux.

This commit includes a simple test to check that LibFuzzer is being
executed in parallel when requested.

Differential Revision: https://reviews.llvm.org/D22742

llvm-svn: 278544
 2016-08-12 18:29:36 +00:00