Commit Graph

22 Commits

Author SHA1 Message Date
Frederich Munch
4d0cd2ca8d Allow clients to specify search order of DynamicLibraries.
Summary: Different JITs and other clients of LLVM may have different needs in how symbol resolution should occur.

Reviewers: v.g.vassilev, lhames, karies

Reviewed By: v.g.vassilev

Subscribers: pcanal, llvm-commits

Differential Revision: https://reviews.llvm.org/D33529

llvm-svn: 307849
2017-07-12 21:22:45 +00:00
Frederich Munch
0cccf42c4a Refactor DynamicLibrary so searching for a symbol will have a defined order and
libraries are properly unloaded when llvm_shutdown is called.

Summary:
This was mostly affecting usage of the JIT, where storing the library handles in
a set made iteration unordered/undefined. This lead to disagreement between the
JIT and native code as to what the address and implementation of particularly on
Windows with stdlib functions:

JIT: putenv_s("TEST", "VALUE") // called msvcrt.dll, putenv_s
JIT: getenv("TEST") -> "VALUE" // called msvcrt.dll, getenv
Native: getenv("TEST") -> NULL // called ucrt.dll, getenv

Also fixed is the issue of DynamicLibrary::getPermanentLibrary(0,0) on Windows
not giving priority to the process' symbols as it did on Unix.

Reviewers: chapuni, v.g.vassilev, lhames

Reviewed By: lhames

Subscribers: danalbert, srhines, mgorny, vsk, llvm-commits

Differential Revision: https://reviews.llvm.org/D30107

llvm-svn: 301562
2017-04-27 16:55:24 +00:00
Frederich Munch
4b689f3d70 Revert "Refactor DynamicLibrary so searching for a symbol will have a defined order"
The i686-mingw32-RA-on-linux bot is still having errors.

This reverts commit r301236.

llvm-svn: 301240
2017-04-24 20:16:01 +00:00
Frederich Munch
9771f2c8f0 Refactor DynamicLibrary so searching for a symbol will have a defined order and
libraries are properly unloaded when llvm_shutdown is called.

Summary:
This was mostly affecting usage of the JIT, where storing the library handles in
a set made iteration unordered/undefined. This lead to disagreement between the
JIT and native code as to what the address and implementation of particularly on
Windows with stdlib functions:

JIT: putenv_s("TEST", "VALUE") // called msvcrt.dll, putenv_s
JIT: getenv("TEST") -> "VALUE" // called msvcrt.dll, getenv
Native: getenv("TEST") -> NULL // called ucrt.dll, getenv

Also fixed is the issue of DynamicLibrary::getPermanentLibrary(0,0) on Windows
not giving priority to the process' symbols as it did on Unix.

Reviewers: chapuni, v.g.vassilev, lhames

Reviewed By: lhames

Subscribers: danalbert, srhines, mgorny, vsk, llvm-commits

Differential Revision: https://reviews.llvm.org/D30107

llvm-svn: 301236
2017-04-24 19:55:16 +00:00
Frederich Munch
f258c34ec2 Revert "Refactor DynamicLibrary so searching for a symbol will have a defined order.”
The changes are causing the i686-mingw32 build to fail.

This reverts commit r301153, and the changes for a separate warning on i686-mingw32 in r301155  and r301156.

llvm-svn: 301157
2017-04-24 03:33:30 +00:00
Frederich Munch
f573935fa8 Refactor DynamicLibrary so searching for a symbol will have a defined order and
libraries are properly unloaded when llvm_shutdown is called.

Summary:
This was mostly affecting usage of the JIT, where storing the library handles in
a set made iteration unordered/undefined. This lead to disagreement between the
JIT and native code as to what the address and implementation of particularly on
Windows with stdlib functions:

JIT: putenv_s("TEST", "VALUE") // called msvcrt.dll, putenv_s
JIT: getenv("TEST") -> "VALUE" // called msvcrt.dll, getenv
Native: getenv("TEST") -> NULL // called ucrt.dll, getenv

Also fixed is the issue of DynamicLibrary::getPermanentLibrary(0,0) on Windows
not giving priority to the process' symbols as it did on Unix.

Reviewers: chapuni, v.g.vassilev, lhames

Reviewed By: lhames

Subscribers: danalbert, srhines, mgorny, vsk, llvm-commits

Differential Revision: https://reviews.llvm.org/D30107

llvm-svn: 301153
2017-04-24 02:30:12 +00:00
Vassil Vassilev
51184bbd49 Remove redundant include.
llvm-svn: 296775
2017-03-02 18:04:44 +00:00
Vassil Vassilev
e96e1f6f2d Reland r296442 with modifications reverted in r296463.
Original commit message:

"Allow externally dlopen-ed libraries to be registered as permanent libraries.

This is also useful in cases when llvm is in a shared library. First we dlopen
the llvm shared library and then we register it as a permanent library in order
to keep the JIT and other services working.

Patch reviewed by Vedant Kumar (D29955)!"

llvm-svn: 296774
2017-03-02 17:56:45 +00:00
NAKAMURA Takumi
ccf0e89448 Revert r296442 (and r296443), "Allow externally dlopen-ed libraries to be registered as permanent libraries."
It broke clang/test/Analysis/checker-plugins.c

llvm-svn: 296463
2017-02-28 10:15:18 +00:00
Vassil Vassilev
f324de55aa Allow externally dlopen-ed libraries to be registered as permanent libraries.
This is also useful in cases when llvm is in a shared library. First we dlopen
the llvm shared library and then we register it as a permanent library in order
to keep the JIT and other services working.

Patch reviewed by Vedant Kumar (D29955)!

llvm-svn: 296442
2017-02-28 07:11:59 +00:00
Alexander Kornienko
f993659b8f Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)
Apparently, the style needs to be agreed upon first.

llvm-svn: 240390
2015-06-23 09:49:53 +00:00
Alexander Kornienko
40cb19d802 Fixed/added namespace ending comments using clang-tidy. NFC
The patch is generated using this command:

tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \
  -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \
  llvm/lib/


Thanks to Eugene Kosov for the original patch!

llvm-svn: 240137
2015-06-19 15:57:42 +00:00
Zachary Turner
52ef28bf01 Fix some semantic usability issues with DynamicLibrary.
This patch allows invalid DynamicLibrary instances to be
constructed, and fixes the const-correctness of the isValid()
method.

No functional change.

llvm-svn: 216571
2014-08-27 18:13:25 +00:00
Benjamin Kramer
da144ed5a2 Canonicalize header guards into a common format.
Add header guards to files that were missing guards. Remove #endif comments
as they don't seem common in LLVM (we can easily add them back if we decide
they're useful)

Changes made by clang-tidy with minor tweaks.

llvm-svn: 215558
2014-08-13 16:26:38 +00:00
Craig Topper
ee78063a54 [C++11] Make use of 'nullptr' in the Support library.
llvm-svn: 205697
2014-04-07 04:17:22 +00:00
Jakub Staszak
f1ea1a7f37 Fix include guards so they exactly match file names.
llvm-svn: 172025
2013-01-10 00:45:19 +00:00
Eli Friedman
ed37686ef1 Add missing includes/class declaration.
llvm-svn: 143718
2011-11-04 18:30:30 +00:00
Jordy Rose
8f407b9649 ...and make sure DynamicLibrary builds by removing "const" from the Invalid placeholder.
llvm-svn: 137843
2011-08-17 18:28:14 +00:00
Jordy Rose
06883230c0 Don't use NULL to represent an invalid library; Cygwin uses this for RTLD_DEFAULT. Caught by Takumi.
llvm-svn: 137841
2011-08-17 18:23:17 +00:00
Jordy Rose
c689530acc Use DynamicLibrary instances as a way to get symbols from a specific library. Preparation for upcoming (preliminary) support for plugins for the static analyzer.
llvm-svn: 137791
2011-08-17 00:29:32 +00:00
Charles Davis
e7f14dfdb8 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
2010-11-29 19:44:50 +00:00
Michael J. Spencer
d5ec932c3a Merge System into Support.
llvm-svn: 120298
2010-11-29 18:16:10 +00:00