cpp/openttd-patchpack/source Files · src/cpu.h

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r27870:7c06e9e1a86b 1.4 KiB text/x-c Show Annotation Show as Raw Download as Raw

Patric Stout

Fix: asserts unintentially being partially disabled in release-builds (#11268)

The nlohmann-json header file includes assert.h, which rudely resets
the assert macro to what that header thinks is right. As we set the
assert macro to be active with release builds when WITH_ASSERT is
active, this means that every file including nlohmann-json has their
asserts disabled (for release-builds) but files that don't do no.

Let's avoid this issue, by telling nlohmann to not include assert.h.

/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file cpu.h Functions related to CPU specific instructions. */

#ifndef CPU_H
#define CPU_H

/**
 * Get the tick counter from the CPU (high precision timing).
 * @return The count.
 */
uint64_t ottd_rdtsc();

/**
 * Get the CPUID information from the CPU.
 * @param info The retrieved info. All zeros on architectures without CPUID.
 * @param type The information this instruction should retrieve.
 */
void ottd_cpuid(int info[4], int type);

/**
 * Check whether the current CPU has the given flag.
 * @param type  The type to be passing to cpuid (usually 1).
 * @param index The index in the returned info array.
 * @param bit   The bit index that needs to be set.
 * @return The value of the bit, or false when there is no CPUID or the type is not available.
 */
bool HasCPUIDFlag(uint type, uint index, uint bit);

#endif /* CPU_H */