mirror of
https://github.com/UniXNU/NativeMetal.git
synced 2026-11-07 15:46:17 +03:00
rponeawa
69efcdcdc5
Use a writable per-user cache with container fallback, keep Turnip disk caching enabled, and isolate concurrent cache-pack imports. Verify cache round trips, concurrent imports, and the iPadOS 27 plugin compile.
43 lines
1.6 KiB
C++
43 lines
1.6 KiB
C++
// SPDX-License-Identifier: MIT
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#pragma once
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#include <string>
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#include <pwd.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <vector>
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// Processes of one user share immutable, version-keyed shader entries. A sandbox
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// that cannot write this directory continues with its container's cache.
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inline std::string sharedShaderCacheDirectory() {
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static const std::string path = []() -> std::string {
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std::string root;
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if (const char *override = getenv("NATIVE_METAL_SHARED_CACHE_DIR")) {
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if (!*override) return {};
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root = override;
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} else {
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passwd user{}, *found=nullptr;
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std::vector<char> bytes(16384);
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if (getpwuid_r(getuid(), &user, bytes.data(), bytes.size(), &found) || !found || !user.pw_dir) return {};
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root = std::string(user.pw_dir) + "/Library/Caches/org.unixnu.metal";
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}
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mkdir(root.c_str(), 0700);
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struct stat st = {};
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if (lstat(root.c_str(), &st) || !S_ISDIR(st.st_mode) || st.st_uid != getuid() || (st.st_mode & 0022)) return {};
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std::string probe = root + "/.write-XXXXXX";
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int fd = mkstemp(probe.data());
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if (fd < 0) return {};
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close(fd); unlink(probe.c_str());
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return root;
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}();
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return path;
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}
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// Call before the first Vulkan device is opened, including the optional smoke path.
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inline void configureShaderDiskCache(const std::string &root) {
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if (root.empty()) return;
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const std::string ir3 = root + "/ir3";
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mkdir(ir3.c_str(), 0700);
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if (access(ir3.c_str(), W_OK) == 0) setenv("MESA_SHADER_CACHE_DIR", ir3.c_str(), 0);
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}
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