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Revert "libc/atomic: decoupling atomic and spinlock to avoid recursion"

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This reverts commit c37b0de28c.
This commit is contained in:
chao an
2024-10-14 10:42:55 +08:00
committed by Xiang Xiao
parent d655569a7c
commit 39c1c871a0
1 changed files with 37 additions and 63 deletions
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libs/libc/machine/arch_atomic.c
+37 -63
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@@ -28,33 +28,7 @@
#include <stdbool.h>
#include <stdint.h>
#include <nuttx/irq.h>
/****************************************************************************
* Private Data
****************************************************************************/
#ifdef CONFIG_SMP
static inline_function irqstate_t atomic_lock(void)
{
return enter_critical_section();
}
static inline_function void atomic_unlock(irqstate_t flags)
{
leave_critical_section(flags);
}
#else
static inline_function irqstate_t atomic_lock(void)
{
return up_irq_save();
}
static inline_function void atomic_unlock(irqstate_t flags)
{
up_irq_restore(flags);
}
#endif
#include <nuttx/spinlock.h>
/****************************************************************************
* Pre-processor Definitions
@@ -65,11 +39,11 @@ static inline_function void atomic_unlock(irqstate_t flags)
void weak_function __atomic_store_##n (FAR volatile void *ptr, \
type value, int memorder) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
\
*(FAR type *)ptr = value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
}
#define LOAD(n, type) \
@@ -77,11 +51,11 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __atomic_load_##n (FAR const volatile void *ptr, \
int memorder) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
\
type ret = *(FAR type *)ptr; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
@@ -90,13 +64,13 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __atomic_exchange_##n (FAR volatile void *ptr, \
type value, int memorder) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
\
type ret = *tmp; \
*tmp = value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
@@ -108,7 +82,7 @@ static inline_function void atomic_unlock(irqstate_t flags)
int success, int failure) \
{ \
bool ret = false; \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmpmem = (FAR type *)mem; \
FAR type *tmpexp = (FAR type *)expect; \
\
@@ -122,7 +96,7 @@ static inline_function void atomic_unlock(irqstate_t flags)
*tmpexp = *tmpmem; \
} \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
@@ -131,13 +105,13 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __atomic_flags_test_and_set##n (FAR volatile void *ptr, \
int memorder) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
type ret = *tmp; \
\
*(FAR type *)ptr = 1; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
@@ -146,13 +120,13 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __atomic_fetch_add_##n (FAR volatile void *ptr, \
type value, int memorder) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
type ret = *tmp; \
\
*tmp = *tmp + value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
@@ -161,13 +135,13 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __atomic_fetch_sub_##n (FAR volatile void *ptr, \
type value, int memorder) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
type ret = *tmp; \
\
*tmp = *tmp - value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
@@ -176,13 +150,13 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __atomic_fetch_and_##n (FAR volatile void *ptr, \
type value, int memorder) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
type ret = *tmp; \
\
*tmp = *tmp & value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
@@ -191,13 +165,13 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __atomic_fetch_or_##n (FAR volatile void *ptr, \
type value, int memorder) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
type ret = *tmp; \
\
*tmp = *tmp | value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
@@ -206,13 +180,13 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __atomic_fetch_xor_##n (FAR volatile void *ptr, \
type value, int memorder) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
type ret = *tmp; \
\
*tmp = *tmp ^ value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
@@ -221,12 +195,12 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __sync_add_and_fetch_##n (FAR volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
\
*tmp = *tmp + value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
@@ -235,12 +209,12 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __sync_sub_and_fetch_##n (FAR volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
\
*tmp = *tmp - value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
@@ -249,12 +223,12 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __sync_or_and_fetch_##n (FAR volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
\
*tmp = *tmp | value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
@@ -263,12 +237,12 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __sync_and_and_fetch_##n (FAR volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
\
*tmp = *tmp & value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
@@ -277,12 +251,12 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __sync_xor_and_fetch_##n (FAR volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
\
*tmp = *tmp ^ value; \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
@@ -291,12 +265,12 @@ static inline_function void atomic_unlock(irqstate_t flags)
type weak_function __sync_nand_and_fetch_##n (FAR volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
\
*tmp = ~(*tmp & value); \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
@@ -307,7 +281,7 @@ static inline_function void atomic_unlock(irqstate_t flags)
type newvalue) \
{ \
bool ret = false; \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
\
if (*tmp == oldvalue) \
@@ -316,7 +290,7 @@ static inline_function void atomic_unlock(irqstate_t flags)
*tmp = newvalue; \
} \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
@@ -326,7 +300,7 @@ static inline_function void atomic_unlock(irqstate_t flags)
type oldvalue, \
type newvalue) \
{ \
irqstate_t irqstate = atomic_lock(); \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
FAR type *tmp = (FAR type *)ptr; \
type ret = *tmp; \
\
@@ -335,7 +309,7 @@ static inline_function void atomic_unlock(irqstate_t flags)
*tmp = newvalue; \
} \
\
atomic_unlock(irqstate); \
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}