Hello_User/XenonRecomp
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Check if there is an identical file before saving.

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This commit is contained in:
Skyth
2024-09-18 16:04:52 +03:00
parent 182b9a5060
commit 55a551362b
4 changed files with 42 additions and 8 deletions
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39
PowerRecomp/main.cpp
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@@ -9,6 +9,7 @@
#include <cassert>
#include <toml++/toml.hpp>
#include <unordered_map>
#include <xxhash.h>
static uint64_t computeMask(uint32_t mstart, uint32_t mstop)
{
@@ -119,7 +120,7 @@ int main(int argc, char* argv[])
}
std::string out;
out.reserve(512 * 1024 * 1024);
out.reserve(10 * 1024 * 1024);
auto print = [&]<class... Args>(std::format_string<Args...> fmt, Args&&... args)
{
@@ -134,6 +135,7 @@ int main(int argc, char* argv[])
std::filesystem::create_directory("out");
std::vector<uint8_t> tempData;
size_t cppFileIndex = 0;
auto saveFile = [&](std::string name = "")
@@ -146,9 +148,31 @@ int main(int argc, char* argv[])
++cppFileIndex;
}
FILE* f = fopen(name.c_str(), "wb");
fwrite(out.data(), 1, out.size(), f);
fclose(f);
bool shouldWrite = true;
// Check if an identical file already exists first to not trigger recompilation
FILE* f = fopen(name.c_str(), "rb");
if (f)
{
fseek(f, 0, SEEK_END);
long fileSize = ftell(f);
if (fileSize == out.size())
{
fseek(f, 0, SEEK_SET);
tempData.resize(fileSize);
fread(tempData.data(), 1, fileSize, f);
shouldWrite = XXH3_64bits(tempData.data(), tempData.size()) != XXH3_64bits(out.data(), out.size());
}
fclose(f);
}
if (shouldWrite)
{
f = fopen(name.c_str(), "wb");
fwrite(out.data(), 1, out.size(), f);
fclose(f);
}
out.clear();
}
@@ -167,7 +191,7 @@ int main(int argc, char* argv[])
{
println("#include \"ppc_recomp_shared.h\"\n");
println("extern \"C\" __declspec(dllexport) PPCFuncMapping PPCFuncMapping[] = {{");
println("const struct PPCFuncMapping PPCFuncMapping[] = {{");
for (auto& symbol : image.symbols)
println("\t{{ 0x{:X}, {} }},", symbol.address, symbol.name);
@@ -181,12 +205,13 @@ int main(int argc, char* argv[])
{
if ((funcIdx % 100) == 0)
{
std::println("Recompiling functions... {}%", static_cast<float>(funcIdx) / functions.size() * 100.0f);
saveFile();
println("#include \"ppc_recomp_shared.h\"\n");
}
if ((funcIdx % 2000) == 0 || (funcIdx == (functions.size() - 1)))
std::println("Recompiling functions... {}%", static_cast<float>(funcIdx + 1) / functions.size() * 100.0f);
auto& fn = functions[funcIdx];
auto base = fn.base;
auto end = base + fn.size;