clang

Commit Graph

Author	SHA1	Message	Date
Gabor Horvath	a621a8df84	[analyzer] lock_guard and unique_lock extension for BlockInCriticalSection checker A patch by zdtorok (Zoltán Dániel Török)! Differential Revision: https://reviews.llvm.org/D33729 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@316892 91177308-0d34-0410-b5e6-96231b3b80d8	2017-10-30 10:09:55 +00:00
Gabor Horvath	1531e0774c	[analyzer] Extend block in critical section check with C11 and Pthread APIs. Patch by Zoltan Daniel Torok! Differential Revision: https://reviews.llvm.org/D29567 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@297461 91177308-0d34-0410-b5e6-96231b3b80d8	2017-03-10 14:50:12 +00:00
Anna Zaks	d9e26cad3c	[analyzer] Add a checker that detects blocks in critical sections This checker should find the calls to blocking functions (for example: sleep, getc, fgets,read,recv etc.) inside a critical section. When sleep(x) is called while a mutex is held, other threads cannot lock the same mutex. This might take some time, leading to bad performance or even deadlock. Example: mutex_t m; void f() { sleep(1000); // Error: sleep() while m is locked! [f() is called from foobar() while m is locked] // do some work } void foobar() { lock(m); f(); unlock(m); } A patch by zdtorok (Zoltán Dániel Török)! Differential Revision: https://reviews.llvm.org/D21506 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@282011 91177308-0d34-0410-b5e6-96231b3b80d8	2016-09-20 20:28:50 +00:00

Author

SHA1

Message

Date

Gabor Horvath

a621a8df84

[analyzer] lock_guard and unique_lock extension for BlockInCriticalSection checker

A patch by zdtorok (Zoltán Dániel Török)!

Differential Revision: https://reviews.llvm.org/D33729


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@316892 91177308-0d34-0410-b5e6-96231b3b80d8

2017-10-30 10:09:55 +00:00

Gabor Horvath

1531e0774c

[analyzer] Extend block in critical section check with C11 and Pthread APIs.

Patch by Zoltan Daniel Torok!

Differential Revision: https://reviews.llvm.org/D29567



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@297461 91177308-0d34-0410-b5e6-96231b3b80d8

2017-03-10 14:50:12 +00:00

Anna Zaks

d9e26cad3c

[analyzer] Add a checker that detects blocks in critical sections

This checker should find the calls to blocking functions (for example: sleep, getc, fgets,read,recv etc.) inside a critical section. When sleep(x) is called while a mutex is held, other threads cannot lock the same mutex. This might take some time, leading to bad performance or even deadlock.

Example:

mutex_t m;

void f() {
  sleep(1000); // Error: sleep() while m is locked! [f() is called from foobar() while m is locked]
  // do some work
}

void foobar() {
  lock(m);
  f();
  unlock(m);
}

A patch by zdtorok (Zoltán Dániel Török)!

Differential Revision: https://reviews.llvm.org/D21506

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@282011 91177308-0d34-0410-b5e6-96231b3b80d8

2016-09-20 20:28:50 +00:00

3 Commits