[poppler] [PATCH v2 1/5] Splash: Reserve space for path segments upfront

[Stefan Brüns]

Instead of iteratively growing the array reserve sufficient space
prior to populating the array.
---
 poppler/SplashOutputDev.cc | 1 +
 splash/SplashPath.cc       | 4 ++++
 splash/SplashPath.h        | 3 +++
 3 files changed, 8 insertions(+)

diff --git a/poppler/SplashOutputDev.cc b/poppler/SplashOutputDev.cc
index b85a860c..ae93bddd 100644
--- a/poppler/SplashOutputDev.cc
+++ b/poppler/SplashOutputDev.cc
@@ -2368,6 +2368,7 @@ SplashPath *SplashOutputDev::convertPath(GfxState *state, GfxPath *path,
   for (i = 0; i < path->getNumSubpaths(); ++i) {
     subpath = path->getSubpath(i);
     if (subpath->getNumPoints() > n) {
+      sPath->reserve(subpath->getNumPoints() + 1);
       sPath->moveTo((SplashCoord)subpath->getX(0),
 		    (SplashCoord)subpath->getY(0));
       j = 1;
diff --git a/splash/SplashPath.cc b/splash/SplashPath.cc
index 09b2a76e..4a00e959 100644
--- a/splash/SplashPath.cc
+++ b/splash/SplashPath.cc
@@ -62,6 +62,10 @@ SplashPath::~SplashPath() {
   gfree(hints);
 }
 
+void  SplashPath::reserve(int nPts) {
+  grow(nPts - size);
+}
+
 // Add space for <nPts> more points.
 void SplashPath::grow(int nPts) {
   if (length + nPts > size) {
diff --git a/splash/SplashPath.h b/splash/SplashPath.h
index c8164a8b..c85303a8 100644
--- a/splash/SplashPath.h
+++ b/splash/SplashPath.h
@@ -115,6 +115,9 @@ public:
   // Get the current point.
   GBool getCurPt(SplashCoord *x, SplashCoord *y);
 
+  // Reserve space for at least n points
+  void reserve(int n);
+
 protected:
 
   SplashPath(SplashPath *path);
-- 
2.16.3