[OpenMP] Implement OpenMP 5.0 affinity format functionality

This patch adds the affinity format functionality introduced in OpenMP 5.0.
This patch adds: Two new environment variables:

OMP_DISPLAY_AFFINITY=TRUE|FALSE
OMP_AFFINITY_FORMAT=<string>
and Four new API:
1) omp_set_affinity_format()
2) omp_get_affinity_format()
3) omp_display_affinity()
4) omp_capture_affinity()
The affinity format functionality has two ICV's associated with it:
affinity-display-var (bool) and affinity-format-var (string).
The affinity-display-var enables/disables the functionality through the
envirable OMP_DISPLAY_AFFINITY. The affinity-format-var is a formatted
string with the special field types beginning with a '%' character
similar to printf
For example, the affinity-format-var could be:
"OMP: host:%H pid:%P OStid:%i num_threads:%N thread_num:%n affinity:{%A}"

The affinity-format-var is displayed by every thread implicitly at the beginning
of a parallel region when any thread's affinity has changed (including a brand
new thread being spawned), or explicitly using the omp_display_affinity() API.
The omp_capture_affinity() function can capture the affinity-format-var in a
char buffer. And omp_set|get_affinity_format() allow the user to set|get the
affinity-format-var explicitly at runtime. omp_capture_affinity() and
omp_get_affinity_format() both return the number of characters needed to hold
the entire string it tried to make (not including NULL character). If not
enough buffer space is available,
both these functions truncate their output.

Differential Revision: https://reviews.llvm.org/D55148


git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@349089 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 0 deletions

diff --git a/runtime/src/kmp_os.h b/runtime/src/kmp_os.h
index 54daaf5..3c2426b 100644
--- a/runtime/src/kmp_os.h
+++ b/runtime/src/kmp_os.h
@@ -105,6 +105,7 @@ typedef long double _Quad;
 
 #define KMP_USE_X87CONTROL 0
 #if KMP_OS_WINDOWS
+#define KMP_END_OF_LINE "\r\n"
 typedef char kmp_int8;
 typedef unsigned char kmp_uint8;
 typedef short kmp_int16;
@@ -140,6 +141,7 @@ typedef unsigned __int64 kmp_uintptr_t;
 #endif /* KMP_OS_WINDOWS */
 
 #if KMP_OS_UNIX
+#define KMP_END_OF_LINE "\n"
 typedef char kmp_int8;
 typedef unsigned char kmp_uint8;
 typedef short kmp_int16;