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-rw-r--r--info/libgamma.texinfo7
-rw-r--r--src/lib/libgamma-error.c.gpp6
-rw-r--r--src/lib/libgamma-error.h6
3 files changed, 15 insertions, 4 deletions
diff --git a/info/libgamma.texinfo b/info/libgamma.texinfo
index 1903144..eb3cfd3 100644
--- a/info/libgamma.texinfo
+++ b/info/libgamma.texinfo
@@ -1280,8 +1280,11 @@ group is stored in @code{libgamma_group_name}.
@code{NULL} is stored if the name of the group
cannto be determined. @file{libgamma.h} give
you access to these variables, they are defined
-as @code{gid_t} and @code{const char*} types
-respectively.
+as @code{gid_t} (@code{short int} for Windows)
+and @code{const char*} types respectively.
+Additionally, except on Windows, these use thread
+local storage, defined with the @code{__thread}
+modifier.
@command{libgamma} defines the following error codes
that its functions may return:
diff --git a/src/lib/libgamma-error.c.gpp b/src/lib/libgamma-error.c.gpp
index 717f11b..1cc81ac 100644
--- a/src/lib/libgamma-error.c.gpp
+++ b/src/lib/libgamma-error.c.gpp
@@ -38,7 +38,7 @@ $>export PATH=".:${PATH}"
* `LIBGAMMA_DEVICE_REQUIRE_GROUP` is returned.
*/
#ifndef __WIN32__
-gid_t libgamma_group_gid = 0;
+__thread gid_t libgamma_group_gid = 0;
#else
short libgamma_group_gid = 0;
#endif
@@ -49,7 +49,11 @@ short libgamma_group_gid = 0;
* `NULL` if the name of the group `libgamma_group_gid`
* cannot be determined.
*/
+#ifndef __WIN32__
+__thread const char* libgamma_group_name = NULL;
+#else
const char* libgamma_group_name = NULL;
+#endif
diff --git a/src/lib/libgamma-error.h b/src/lib/libgamma-error.h
index 7d38568..77564d7 100644
--- a/src/lib/libgamma-error.h
+++ b/src/lib/libgamma-error.h
@@ -35,7 +35,7 @@
* `LIBGAMMA_DEVICE_REQUIRE_GROUP` is returned.
*/
#ifndef __WIN32__
-extern gid_t libgamma_group_gid;
+extern __thread gid_t libgamma_group_gid;
#else
extern short libgamma_group_gid;
#endif
@@ -46,7 +46,11 @@ extern short libgamma_group_gid;
* `NULL` if the name of the group `libgamma_group_gid`
* cannot be determined.
*/
+#ifndef __WIN32__
+extern __thread const char* libgamma_group_name;
+#else
extern const char* libgamma_group_name;
+#endif
/**