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authorDave Watson <davejwatson@fb.com>2016-11-02 18:22:32 -0700
committerJason Evans <jasone@canonware.com>2016-11-02 19:54:19 -0700
commit6c56e194b02ec3888ed35c111d01ef2e62c6c808 (patch)
tree972288c41fe5beec3d85fc5ab1541a41d36e7b89
parenteca3bc01316bbd06ebc5e42f3fe9146ef9552754 (diff)
downloadjemalloc-6c56e194b02ec3888ed35c111d01ef2e62c6c808.tar.gz
Check for existance of CPU_COUNT macro before using it.
This resolves #485.
-rw-r--r--src/jemalloc.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/jemalloc.c b/src/jemalloc.c
index 8210086d..38650ff0 100644
--- a/src/jemalloc.c
+++ b/src/jemalloc.c
@@ -812,8 +812,10 @@ malloc_ncpus(void)
SYSTEM_INFO si;
GetSystemInfo(&si);
result = si.dwNumberOfProcessors;
-#elif defined(JEMALLOC_GLIBC_MALLOC_HOOK)
+#elif defined(JEMALLOC_GLIBC_MALLOC_HOOK) && defined(CPU_COUNT)
/*
+ * glibc >= 2.6 has the CPU_COUNT macro.
+ *
* glibc's sysconf() uses isspace(). glibc allocates for the first time
* *before* setting up the isspace tables. Therefore we need a
* different method to get the number of CPUs.
@@ -2053,6 +2055,7 @@ JEMALLOC_EXPORT void *(*__memalign_hook)(size_t alignment, size_t size) =
je_memalign;
# endif
+#ifdef CPU_COUNT
/*
* To enable static linking with glibc, the libc specific malloc interface must
* be implemented also, so none of glibc's malloc.o functions are added to the
@@ -2071,6 +2074,9 @@ int __posix_memalign(void** r, size_t a, size_t s)
PREALIAS(je_posix_memalign);
#undef PREALIAS
#undef ALIAS
+
+#endif
+
#endif
/*