X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Floader%2FPagedAllocator.cpp;h=464d9d1f4d9c96de0abd1b7503353285d909152e;hb=8c8061a4f8b88410d6d93c039afe6affc4b69cf2;hp=77af8adb008e768e897372b4ec0b6def5570be64;hpb=0f30d8254ff8b9e63795960ec031577cf68fbf95;p=l2e.git

diff --git a/src/loader/PagedAllocator.cpp b/src/loader/PagedAllocator.cpp
index 77af8ad..464d9d1 100644
--- a/src/loader/PagedAllocator.cpp
+++ b/src/loader/PagedAllocator.cpp
@@ -1,6 +1,10 @@
 #include "PagedAllocator.h"
 
+#include <stdexcept>
+
 using std::deque;
+using std::runtime_error;
+
 
 namespace loader {
 
@@ -32,6 +36,25 @@ char *PagedAllocator::Alloc(unsigned int size) {
 	return chunk;
 }
 
+unsigned int PagedAllocator::PageOf(void *ptrIn) const {
+	char *ptr = reinterpret_cast<char *>(ptrIn);
+	unsigned int counter = 0;
+	for (deque<char *>::const_iterator i(pages.begin()), end(pages.end()); i != end; ++i, ++counter) {
+		if (ptr < *i) continue;
+		if (*i < ptr) return counter;
+	}
+	throw runtime_error("PagedAllocator::PageOf");
+}
+
+unsigned int PagedAllocator::PageOffsetOf(void *ptrIn) const {
+	char *ptr = reinterpret_cast<char *>(ptrIn);
+	for (deque<char *>::const_iterator i(pages.begin()), end(pages.end()); i != end; ++i) {
+		if (ptr < *i) continue;
+		if (*i < ptr) return ptr - *i;
+	}
+	throw runtime_error("PagedAllocator::PageOffsetOf");
+}
+
 unsigned int PagedAllocator::Free() const {
 	return pageSize - (head - CurrentPage());
 }