commit c486ea9c3582710474c1085c21c1dc5e2700adc3
author Behdad Esfahbod <behdad@behdad.org> Wed Aug 12 19:36:29 2009 -0400
committer Behdad Esfahbod <behdad@behdad.org> Mon Nov 02 14:40:42 2009 -0500
tree 4874fd40f37df186e109e935e57c6cd52598d19b
parent a579584594f1ca4781f1c5b92ad78513c0b37480

Bug 591511 – hb-blob.c does not compile using mingw on windows

Only call mprotect() when available.  For optimal performance, a win32
way to make memory writeable needs to be added.

src/hb-blob.c

diff --git a/src/hb-blob.c b/src/hb-blob.c
index 6939049..178bc8e 100644
--- a/src/hb-blob.c
+++ b/src/hb-blob.c
@@ -28,8 +28,12 @@
 
 #include "hb-blob.h"
 
+#ifdef HAVE_MPROTECT
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
+#endif /* HAVE_UNISTD_H */
 #include <sys/mman.h>
+#endif /* HAVE_MPROTECT */
 
 struct _hb_blob_t {
   hb_reference_count_t ref_count;
@@ -240,6 +244,7 @@
 
   hb_mutex_lock (blob->lock);
 
+#ifdef HAVE_MPROTECT
   if (blob->mode == HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITEABLE) {
     unsigned int pagesize, mask, length;
     const char *addr;
@@ -281,6 +286,9 @@
 	     addr, addr+length, length);
 #endif
   }
+#else /* !HAVE_MPROTECT */
+#warning "No way to make readonly memory writeable.  This is suboptimal."
+#endif
 
 done:
   mode = blob->mode;