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idm: Implement creation/destruction invalidation counter

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* "Ensures" newely created IDs won't have the same ID as old destroyed objects for lv2_obj. (256 tries cycle)

Similar to how the kernel implements it.
This commit is contained in:
Eladash
2019-11-28 12:17:16 +02:00
committed by Ivan
parent 224a0e4b1a
commit 3265772ae4
5 changed files with 44 additions and 17 deletions
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rpcs3/Emu/IdManager.cpp
+6 -4
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@@ -1,4 +1,4 @@
#include "stdafx.h"
#include "stdafx.h"
#include "IdManager.h"
#include "Utilities/Thread.h"
@@ -7,7 +7,7 @@ shared_mutex id_manager::g_mutex;
thread_local DECLARE(idm::g_id);
DECLARE(idm::g_map);
id_manager::id_map::pointer idm::allocate_id(const id_manager::id_key& info, u32 base, u32 step, u32 count)
id_manager::id_map::pointer idm::allocate_id(const id_manager::id_key& info, u32 base, u32 step, u32 count, std::pair<u32, u32> invl_range)
{
// Base type id is stored in value
auto& vec = g_map[info.value()];
@@ -32,8 +32,10 @@ id_manager::id_map::pointer idm::allocate_id(const id_manager::id_key& info, u32
// Look for free ID
if (!ptr->second)
{
g_id = next;
ptr->first = id_manager::id_key(next, info.type());
// Incremenet ID invalidation counter
const u32 id = next | ((ptr->first + (1u << invl_range.first)) & (invl_range.second ? (((1u << invl_range.second) - 1) << invl_range.first) : 0));
g_id = id;
ptr->first = id_manager::id_key(id, info.type());
return ptr;
}
}