Eliminate dependence on boost::interprocess #8223

In this repo, `boost::interprocess` was being used soley to make `uint32_t` operations atomic. So I replaced each instance of
`boost::interprocess::ipcdetail::atomic(...)32` with `std::atomic` methods. I replaced member declarations as applicable. For example,
when I needed to change a `volatile uint32_t` into a `std::atomic<uint32_t>`. Sometimes, a member was being used a boolean flag, so
I replaced it with `std::atomic<bool>`.

You may notice that I didn't touch `levin_client_async.h`. That is because this file is entirely unused and will be deleted in PR monero-project#8211.

Additional changes from review:
* Make some local variables const
* Change postfix operators to prefix operators where value was not need

1 files changed, 7 insertions, 7 deletions

diff --git a/contrib/epee/include/reg_exp_definer.h b/contrib/epee/include/reg_exp_definer.h
index 386a45f9a..d1b800a32 100644
--- a/contrib/epee/include/reg_exp_definer.h
+++ b/contrib/epee/include/reg_exp_definer.h
@@ -28,7 +28,7 @@
 #ifndef _REG_EXP_DEFINER_H_
 #define _REG_EXP_DEFINER_H_
 
-#include <boost/interprocess/detail/atomic.hpp>
+#include <atomic>
 #include <boost/regex.hpp>
 #include "syncobj.h"
 
@@ -46,38 +46,38 @@ namespace epee
   const static global_regexp_critical_section gregexplock;
 
 #define STATIC_REGEXP_EXPR_1(var_name, xpr_text, reg_exp_flags) \
-	static volatile uint32_t regexp_initialized_1 = 0;\
+	static std::atomic<bool> regexp_initialized_1(false);\
 	volatile uint32_t local_is_initialized_1 = regexp_initialized_1;\
 	if(!local_is_initialized_1)\
 	gregexplock.get_lock().lock();\
 	static const boost::regex	var_name(xpr_text , reg_exp_flags);\
 	if(!local_is_initialized_1)\
 {\
-	boost::interprocess::ipcdetail::atomic_write32(&regexp_initialized_1, 1);\
+	regexp_initialized_1 = true;\
 	gregexplock.get_lock().unlock();\
 }
 
 #define STATIC_REGEXP_EXPR_2(var_name, xpr_text, reg_exp_flags) \
-	static volatile uint32_t regexp_initialized_2 = 0;\
+	static std::atomic<bool> regexp_initialized_2(false);\
 	volatile uint32_t local_is_initialized_2 = regexp_initialized_2;\
 	if(!local_is_initialized_2)\
 	gregexplock.get_lock().lock().lock();\
 	static const boost::regex	var_name(xpr_text , reg_exp_flags);\
 	if(!local_is_initialized_2)\
 {\
-	boost::interprocess::ipcdetail::atomic_write32(&regexp_initialized_2, 1);\
+	regexp_initialized_2 = true;\
 	gregexplock.get_lock().lock().unlock();\
 }
 
 #define STATIC_REGEXP_EXPR_3(var_name, xpr_text, reg_exp_flags) \
-	static volatile uint32_t regexp_initialized_3 = 0;\
+	static std::atomic<bool> regexp_initialized_3(false);\
 	volatile uint32_t local_is_initialized_3 = regexp_initialized_3;\
 	if(!local_is_initialized_3)\
 	gregexplock.get_lock().lock().lock();\
 	static const boost::regex	var_name(xpr_text , reg_exp_flags);\
 	if(!local_is_initialized_3)\
 {\
-	boost::interprocess::ipcdetail::atomic_write32(&regexp_initialized_3, 1);\
+	regexp_initialized_3 = true;\
 	gregexplock.get_lock().lock().unlock();\
 }
 }