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d44cfd46
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2008-12-31T13:16:31
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Cleanup our header inclusion order to ensure pthread.h is early
If we are using threads we need to make sure pthread.h comes
in before just about anything else. Some platforms enable
macros that alter what other headers define.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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a1d34bc0
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2008-12-30T21:49:38
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Support building on Mac OS X by using pthread_getspecific for TLS
The Mach-O format does not permit gcc to implement the __thread
TLS specification, so we must instead emulate it using a single
int cell allocated from memory and stored inside of the thread
specific data associated with the current pthread.
What makes this tricky is git_errno must be a valid lvalue, so
we really need to return a pointer to the caller and deference it
as part of the git_errno macro.
The GCC-specific __attribute__((constructor)) extension is used
to ensure the pthread_key_t is allocated before any Git functions
are executed in the library, as this is necessary to access our
thread specific storage.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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b3039bee
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2008-12-30T21:25:13
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Cleanup formatting in our head files to be more consistent
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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b72ca267
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2008-11-29T19:21:24
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Diasble TLS on cygwin
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Acked-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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17643760
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2008-11-29T19:20:07
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Use __CHECKER__ to detect when sparse is running
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Acked-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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ae234862
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2008-11-18T22:20:15
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Add an embryo of a TLS-aware error handling system
This adds the per-thread global variable git_errno to the
system, which callers can examine to get information about
an error.
Two helper functions are added to reduce LoC-count for the
library code itself.
Also, some exceptions are made for running sparse on GIT_TLS
definitions, since it doesn't grok thread-local variables at
all.
Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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36f0f61f
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2008-11-18T19:06:25
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Add compiler/platform agnostic thread-local storage
It doesn't cover all cases, but we can work on those as
we go along. For now, gcc, MSVC++, Intel C/C++, IBM XL C/C++,
Sun Studio C/C++ and Borland C++ Builder are the supported
compilers (although we boldly assume that they all are of
a recent enough version to support thread-local storage).
This is intended to be used in upcoming patches that implement
graceful (but TLS-dependant) error-handling in the library.
As an added bonus, we also bring the online_cpus() function
from git.git to detect the number of usable cpu's.
Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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