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Expansion to Marcian's temporary patch to account for more levels of recursion.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/branches/gnustep_testplant_branch@38430 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Paul Landers 2015-03-23 22:05:57 +00:00
parent 8457967877
commit fa2a23ea28
1 changed files with 38 additions and 4 deletions
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42
Source/NSStringDrawing.m
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@ -143,6 +143,40 @@ static void init_string_drawing(void)
}
}
static int lockedCacheEntries[NUM_CACHE_ENTRIES];
static unsigned int numLockedCacheEntries = 0;
#define DEBUG_CACHE_RECURSION_COUNT 0
static inline BOOL is_entry_locked(unsigned int entry)
{
int i;
for (i=0; i<numLockedCacheEntries; i++)
{
if (lockedCacheEntries[i]==entry) return YES;
}
return NO;
}
static inline void lock_entry(unsigned int entry)
{
lockedCacheEntries[numLockedCacheEntries++] = entry;
#if DEBUG_CACHE_RECURSION_COUNT
static BOOL printing = YES;
if (printing || numLockedCacheEntries > 1)
{
printf("Locked Entries: %d\n", numLockedCacheEntries);
printing = numLockedCacheEntries > 1;
}
#endif
}
static inline void unlock_top_entry()
{
if ( numLockedCacheEntries )
numLockedCacheEntries--;
}
static inline void cache_lock()
{
// FIXME: Put all the init code into an +initialize method
@ -160,6 +194,7 @@ static inline void cache_lock()
static inline void cache_unlock()
{
unlock_top_entry();
[cacheLock unlock];
}
@ -181,8 +216,6 @@ static inline BOOL is_size_match(cache_t *c, int hasSize, NSSize size)
static int cache_match(int hasSize, NSSize size, int useScreenFonts, int *matched)
{
static int LastReplaced = 0;
int i, j;
cache_t *c;
int least_used;
@ -213,7 +246,7 @@ static int cache_match(int hasSize, NSSize size, int useScreenFonts, int *matche
if (least_used == -1 || c->used < least_used)
{
// Avoid replacing the very last one in case of recursion...
if (j != LastReplaced)
if (!is_entry_locked(j))
{
least_used = c->used;
replace = j;
@ -247,6 +280,7 @@ static int cache_match(int hasSize, NSSize size, int useScreenFonts, int *matche
#ifdef STATS
hits++;
#endif
return j;
}
}
@ -257,7 +291,6 @@ static int cache_match(int hasSize, NSSize size, int useScreenFonts, int *matche
misses++;
#endif
*matched = 0;
LastReplaced = replace;
c = cache + replace;
c->used = 1;
@ -307,6 +340,7 @@ static int cache_lookup(int hasSize, NSSize size, int useScreenFonts)
NSTextContainer *textContainer;
ci = cache_match(hasSize, size, useScreenFonts, &hit);
lock_entry(ci);
if (hit)
{
return ci;