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authorMike Perry <mikeperry-git@torproject.org>2018-10-23 19:23:09 +0000
committerGeorge Kadianakis <desnacked@riseup.net>2019-01-02 15:09:13 +0200
commit3ba7581129dcffb16cca2aa8cfc2bd0fa4c8dd06 (patch)
tree3fb868f43adb2e25750aabb6834e1d22f0bd9938 /src
parent99713b176b3713c3960be7b2852ffdb301daa916 (diff)
downloadtor-3ba7581129dcffb16cca2aa8cfc2bd0fa4c8dd06.tar.gz
tor-3ba7581129dcffb16cca2aa8cfc2bd0fa4c8dd06.zip
Provide a smartlist reverse-order traversal.
We need this for padding negotiation so that we can have later machine revisions supercede earlier ones. Co-authored-by: George Kadianakis <desnacked@riseup.net>
Diffstat (limited to 'src')
-rw-r--r--src/lib/smartlist_core/smartlist_foreach.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/lib/smartlist_core/smartlist_foreach.h b/src/lib/smartlist_core/smartlist_foreach.h
index 54f08ac47d..14f2930c9f 100644
--- a/src/lib/smartlist_core/smartlist_foreach.h
+++ b/src/lib/smartlist_core/smartlist_foreach.h
@@ -83,6 +83,14 @@
++var ## _sl_idx) { \
var = (sl)->list[var ## _sl_idx];
+#define SMARTLIST_FOREACH_REVERSE_BEGIN(sl, type, var) \
+ STMT_BEGIN \
+ int var ## _sl_idx, var ## _sl_len=(sl)->num_used; \
+ type var; \
+ for (var ## _sl_idx = var ## _sl_len-1; var ## _sl_idx >= 0; \
+ --var ## _sl_idx) { \
+ var = (sl)->list[var ## _sl_idx];
+
#define SMARTLIST_FOREACH_END(var) \
var = NULL; \
(void) var ## _sl_idx; \