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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /toolkit/components/jsoncpp/include/json/allocator.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'toolkit/components/jsoncpp/include/json/allocator.h')
-rw-r--r--toolkit/components/jsoncpp/include/json/allocator.h88
1 files changed, 88 insertions, 0 deletions
diff --git a/toolkit/components/jsoncpp/include/json/allocator.h b/toolkit/components/jsoncpp/include/json/allocator.h
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+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
+// Distributed under MIT license, or public domain if desired and
+// recognized in your jurisdiction.
+// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
+
+#ifndef JSON_ALLOCATOR_H_INCLUDED
+#define JSON_ALLOCATOR_H_INCLUDED
+
+#include <cstring>
+#include <memory>
+
+#pragma pack(push, 8)
+
+namespace Json {
+template <typename T> class SecureAllocator {
+public:
+ // Type definitions
+ using value_type = T;
+ using pointer = T*;
+ using const_pointer = const T*;
+ using reference = T&;
+ using const_reference = const T&;
+ using size_type = std::size_t;
+ using difference_type = std::ptrdiff_t;
+
+ /**
+ * Allocate memory for N items using the standard allocator.
+ */
+ pointer allocate(size_type n) {
+ // allocate using "global operator new"
+ return static_cast<pointer>(::operator new(n * sizeof(T)));
+ }
+
+ /**
+ * Release memory which was allocated for N items at pointer P.
+ *
+ * The memory block is filled with zeroes before being released.
+ */
+ void deallocate(pointer p, size_type n) {
+ // memset_s is used because memset may be optimized away by the compiler
+ memset_s(p, n * sizeof(T), 0, n * sizeof(T));
+ // free using "global operator delete"
+ ::operator delete(p);
+ }
+
+ /**
+ * Construct an item in-place at pointer P.
+ */
+ template <typename... Args> void construct(pointer p, Args&&... args) {
+ // construct using "placement new" and "perfect forwarding"
+ ::new (static_cast<void*>(p)) T(std::forward<Args>(args)...);
+ }
+
+ size_type max_size() const { return size_t(-1) / sizeof(T); }
+
+ pointer address(reference x) const { return std::addressof(x); }
+
+ const_pointer address(const_reference x) const { return std::addressof(x); }
+
+ /**
+ * Destroy an item in-place at pointer P.
+ */
+ void destroy(pointer p) {
+ // destroy using "explicit destructor"
+ p->~T();
+ }
+
+ // Boilerplate
+ SecureAllocator() {}
+ template <typename U> SecureAllocator(const SecureAllocator<U>&) {}
+ template <typename U> struct rebind { using other = SecureAllocator<U>; };
+};
+
+template <typename T, typename U>
+bool operator==(const SecureAllocator<T>&, const SecureAllocator<U>&) {
+ return true;
+}
+
+template <typename T, typename U>
+bool operator!=(const SecureAllocator<T>&, const SecureAllocator<U>&) {
+ return false;
+}
+
+} // namespace Json
+
+#pragma pack(pop)
+
+#endif // JSON_ALLOCATOR_H_INCLUDED