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Test: include deallocated size in allocator's log

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This commit is contained in:
Benoit Blanchon
2023-04-01 10:59:34 +02:00
parent 2eb726b744
commit 57810af2ac
2 changed files with 50 additions and 26 deletions
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48
extras/tests/Helpers/Allocators.hpp
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@ -37,24 +37,27 @@ class AllocatorLog {
};
struct Reallocate {
Reallocate(size_t s) : size(s) {}
size_t size;
Reallocate(size_t s1, size_t s2) : oldSize(s1), newSize(s2) {}
size_t oldSize, newSize;
};
struct Deallocate {};
struct Deallocate {
Deallocate(size_t s) : size(s) {}
size_t size;
};
AllocatorLog& operator<<(const Allocate& a) {
_log << "allocate(" << a.size << ")\n";
return *this;
}
AllocatorLog& operator<<(const Deallocate&) {
_log << "deallocate()\n";
AllocatorLog& operator<<(const Deallocate& d) {
_log << "deallocate(" << d.size << ")\n";
return *this;
}
AllocatorLog& operator<<(const Reallocate& a) {
_log << "reallocate(" << a.size << ")\n";
_log << "reallocate(" << a.oldSize << ", " << a.newSize << ")\n";
return *this;
}
@ -85,17 +88,25 @@ class SpyingAllocator : public ArduinoJson::Allocator {
void* allocate(size_t n) override {
_log << AllocatorLog::Allocate(n);
return malloc(n);
auto block = reinterpret_cast<AllocatedBlock*>(
malloc(sizeof(AllocatedBlock) + n - 1));
block->size = n;
return block->payload;
}
void deallocate(void* p) override {
_log << AllocatorLog::Deallocate();
free(p);
auto block = AllocatedBlock::fromPayload(p);
_log << AllocatorLog::Deallocate(block->size);
free(block);
}
void* reallocate(void* ptr, size_t n) override {
_log << AllocatorLog::Reallocate(n);
return realloc(ptr, n);
void* reallocate(void* p, size_t n) override {
auto block = AllocatedBlock::fromPayload(p);
_log << AllocatorLog::Reallocate(block->size, n);
block = reinterpret_cast<AllocatedBlock*>(
realloc(block, sizeof(AllocatedBlock) + n - 1));
block->size = n;
return block->payload;
}
const AllocatorLog& log() const {
@ -103,5 +114,18 @@ class SpyingAllocator : public ArduinoJson::Allocator {
}
private:
struct AllocatedBlock {
size_t size;
char payload[1];
static AllocatedBlock* fromPayload(void* p) {
return reinterpret_cast<AllocatedBlock*>(
// Cast to void* to silence "cast increases required alignment of
// target type [-Werror=cast-align]"
reinterpret_cast<void*>(reinterpret_cast<char*>(p) -
offsetof(AllocatedBlock, payload)));
}
};
AllocatorLog _log;
};