mirror of
https://github.com/llvm/llvm-project.git
synced 2025-05-07 03:16:06 +00:00
01a28ca7f8
Summary: This aims to replace the different decorators we've had on each libc++ test with a single solution. Each libc++ will be assigned to the "libc++" category and a single central piece of code will decide whether we are actually able to run libc++ test in the given configuration by enabling or disabling the category (while giving the user the opportunity to override this). I started this effort because I wanted to get libc++ tests running on android, and none of the existing decorators worked for this use case: - skipIfGcc - incorrect, we can build libc++ executables on android with gcc (in fact, after this, we can now do it on linux as well) - lldbutil.skip_if_library_missing - this checks whether libc++.so is loaded in the proces, which fails in case of a statically linked libc++ (this makes copying executables to the remote target easier to manage). To make this work I needed to split out the pseudo_barrier code from the force-included file, as libc++'s atomic does not play well with gcc on linux, and this made every test fail, even though we need the code only in the threading tests. So far, I am only annotating one of the tests with this category. If this does not break anything, I'll proceed to update the rest. Reviewers: jingham, zturner, EricWF Subscribers: srhines, lldb-commits Differential Revision: https://reviews.llvm.org/D30984 llvm-svn: 299028
21 lines
787 B
C++
21 lines
787 B
C++
#include <atomic>
|
|
|
|
// Note that although hogging the CPU while waiting for a variable to change
|
|
// would be terrible in production code, it's great for testing since it
|
|
// avoids a lot of messy context switching to get multiple threads synchronized.
|
|
|
|
typedef std::atomic<int> pseudo_barrier_t;
|
|
#define pseudo_barrier_wait(barrier) \
|
|
do \
|
|
{ \
|
|
--(barrier); \
|
|
while ((barrier).load() > 0) \
|
|
; \
|
|
} while (0)
|
|
|
|
#define pseudo_barrier_init(barrier, count) \
|
|
do \
|
|
{ \
|
|
(barrier) = (count); \
|
|
} while (0)
|