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host_memory: Support staged VirtualProtect calls
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1 changed files with 12 additions and 3 deletions
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@ -110,9 +110,18 @@ public:
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} else {
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UNIMPLEMENTED_MSG("Protection flag combination read={} write={}", read, write);
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}
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DWORD old_flags{};
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if (!VirtualProtect(virtual_base + virtual_offset, length, new_flags, &old_flags)) {
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LOG_CRITICAL(HW_Memory, "Failed to change virtual memory protect rules");
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const size_t virtual_end = virtual_offset + length;
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std::lock_guard lock{placeholder_mutex};
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auto [it, end] = placeholders.equal_range({virtual_offset, virtual_end});
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while (it != end) {
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const size_t offset = std::max(it->lower(), virtual_offset);
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const size_t protect_length = std::min(it->upper(), virtual_end) - offset;
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DWORD old_flags{};
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if (!VirtualProtect(virtual_base + offset, protect_length, new_flags, &old_flags)) {
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LOG_CRITICAL(HW_Memory, "Failed to change virtual memory protect rules");
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}
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++it;
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}
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}
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