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cache: use optimized futexes on i386 and amd64 arch only #105

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cache: use optimized futexes on i386 and amd64 arch only #105

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1 change: 1 addition & 0 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@ all: realall
# Shared cache feature
ifneq ($(USE_SHARED_CACHE),)
CFLAGS += -DUSE_SHARED_CACHE -DUSE_SYSCALL_FUTEX
LDFLAGS += -Wl,--as-needed -lpthread
OBJS += shctx.o ebtree/libebtree.a
ALL += ebtree

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10 changes: 5 additions & 5 deletions shctx.c
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Expand Up @@ -7,7 +7,7 @@
*
*/
#include <sys/mman.h>
#ifdef USE_SYSCALL_FUTEX
#if defined USE_SYSCALL_FUTEX && (defined __i386__ || defined __x86_64__) && defined __linux__
#include <unistd.h>
#include <linux/futex.h>
#include <sys/syscall.h>
Expand All @@ -30,7 +30,7 @@ struct shared_session {


struct shared_context {
#ifdef USE_SYSCALL_FUTEX
#if defined USE_SYSCALL_FUTEX && (defined __i386__ || defined __x86_64__) && defined __linux__
unsigned int waiters;
#else /* USE_SYSCALL_FUTEX */
pthread_mutex_t mutex;
Expand All @@ -47,7 +47,7 @@ static void (*shared_session_new_cbk)(unsigned char *session, unsigned int sessi


/* Lock functions */
#ifdef USE_SYSCALL_FUTEX
#if defined USE_SYSCALL_FUTEX && (defined __i386__ || defined __x86_64__) && defined __linux__
static inline unsigned int xchg(unsigned int *ptr, unsigned int x)
{
__asm volatile("lock xchgl %0,%1"
Expand Down Expand Up @@ -344,7 +344,7 @@ int shared_context_init(SSL_CTX *ctx, int size)
if (!shctx) {
int i;

#ifndef USE_SYSCALL_FUTEX
#if !(defined USE_SYSCALL_FUTEX && (defined __i386__ || defined __x86_64__) && defined __linux__)
pthread_mutexattr_t attr;
#endif /* USE_SYSCALL_FUTEX */
struct shared_session *prev,*cur;
Expand All @@ -354,7 +354,7 @@ int shared_context_init(SSL_CTX *ctx, int size)
if (!shctx || shctx == MAP_FAILED)
return -1;

#ifdef USE_SYSCALL_FUTEX
#if defined USE_SYSCALL_FUTEX && (defined __i386__ || defined __x86_64__) && defined __linux__
shctx->waiters = 0;
#else
pthread_mutexattr_init(&attr);
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