vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
102 lines
3.0 KiB
C++
102 lines
3.0 KiB
C++
//===---- ExclusiveAccess.h - Helper for exclusive access data structures -===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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//===----------------------------------------------------------------------===//
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#ifndef OMPTARGET_EXCLUSIVE_ACCESS
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#define OMPTARGET_EXCLUSIVE_ACCESS
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#include <cassert>
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#include <cstddef>
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#include <cstdint>
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#include <mutex>
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/// Forward declaration.
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template <typename Ty> struct Accessor;
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/// A protected object is a simple wrapper to allocate an object of type \p Ty
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/// together with a mutex that guards accesses to the object. The only way to
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/// access the object is through the "exclusive accessor" which will lock the
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/// mutex accordingly.
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template <typename Ty> struct ProtectedObj {
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using AccessorTy = Accessor<Ty>;
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/// Get an exclusive access Accessor object. \p DoNotGetAccess allows to
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/// create an accessor that is not owning anything based on a boolean
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/// condition.
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AccessorTy getExclusiveAccessor(bool DoNotGetAccess = false);
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private:
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Ty Obj;
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std::mutex Mtx;
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friend struct Accessor<Ty>;
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};
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/// Helper to provide transparent exclusive access to protected objects.
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template <typename Ty> struct Accessor {
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/// Default constructor does not own anything and cannot access anything.
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Accessor() : Ptr(nullptr) {}
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/// Constructor to get exclusive access by locking the mutex protecting the
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/// underlying object.
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Accessor(ProtectedObj<Ty> &PO) : Ptr(&PO) { lock(); }
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/// Constructor to get exclusive access by taking it from \p Other.
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Accessor(Accessor<Ty> &&Other) : Ptr(Other.Ptr) { Other.Ptr = nullptr; }
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Accessor(Accessor &Other) = delete;
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/// If the object is still owned when the lifetime ends we give up access.
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~Accessor() { unlock(); }
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/// Give up access to the underlying object, virtually "destroying" the
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/// accessor even if the object is still life.
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void destroy() {
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unlock();
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Ptr = nullptr;
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}
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/// Provide transparent access to the underlying object.
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Ty &operator*() {
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assert(Ptr && "Trying to access an object through a non-owning (or "
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"destroyed) accessor!");
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return Ptr->Obj;
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}
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Ty *operator->() {
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assert(Ptr && "Trying to access an object through a non-owning (or "
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"destroyed) accessor!");
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return &Ptr->Obj;
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}
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private:
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/// Lock the underlying object if there is one.
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void lock() {
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if (Ptr)
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Ptr->Mtx.lock();
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}
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/// Unlock the underlying object if there is one.
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void unlock() {
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if (Ptr)
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Ptr->Mtx.unlock();
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}
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/// Pointer to the underlying object or null if the accessor lost access,
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/// e.g., after a destroy call.
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ProtectedObj<Ty> *Ptr;
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};
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template <typename Ty>
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Accessor<Ty> ProtectedObj<Ty>::getExclusiveAccessor(bool DoNotGetAccess) {
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if (DoNotGetAccess)
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return Accessor<Ty>();
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return Accessor<Ty>(*this);
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}
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#endif
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