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This commit is contained in:
Hannes Janetzek 2013-02-04 17:49:54 +01:00
parent a95e7d6f31
commit 574ebee29c
1 changed files with 6 additions and 10 deletions
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16
src/org/oscim/renderer/MapTile.java
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@ -91,25 +91,24 @@ public final class MapTile extends JobTile {
return state != 0; return state != 0;
} }
/**
* @return true if tile could be referenced by another thread
*/
boolean isLocked() { boolean isLocked() {
return locked > 0 || refs > 0; return locked > 0 || refs > 0;
} }
void lock() { void lock() {
if (locked++ > 0)
locked++;
if (locked > 1)
return; return;
// lock all tiles that could serve as proxy
MapTile p = rel.parent.tile; MapTile p = rel.parent.tile;
if (p != null && (p.state != 0)) { if (p != null && (p.state != 0)) {
proxies |= PROXY_PARENT; proxies |= PROXY_PARENT;
p.refs++; p.refs++;
} }
// FIXME handle root-tile case?
p = rel.parent.parent.tile; p = rel.parent.parent.tile;
if (p != null && (p.state != 0)) { if (p != null && (p.state != 0)) {
proxies |= PROXY_GRAMPA; proxies |= PROXY_GRAMPA;
@ -128,10 +127,7 @@ public final class MapTile extends JobTile {
} }
void unlock() { void unlock() {
if (--locked > 0 || proxies == 0)
locked--;
if (locked > 0 || proxies == 0)
return; return;
if ((proxies & PROXY_PARENT) != 0) if ((proxies & PROXY_PARENT) != 0)