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* c-cpp-builtin.c (cpp_atomic_builtins):New. Emit all atomic predefines in one place. Add LOCK_FREE predefines. (c_cpp_builtins): Move Legacy HAVE_SYNC predefines to new func. libstdc++-v3 * include/bits/atomic_base.h (ATOMIC_*_LOCK_FREE): Use new cpp predefined macros. * testsuite/29_atomics/headers/atomic/macros.cc: Add BOOL and POINTER macro checks. Check for expected compile time values. From-SVN: r181784
This commit is contained in:
Andrew MacLeod
Andrew Macleod
parent
f9c55897eb
commit
62bad7cd05
@ -1,3 +1,10 @@
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2011-11-28 Andrew MacLeod <amacleod@redhat.com>
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* c-cpp-builtin.c (cpp_atomic_builtins):New. Emit all atomic
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predefines in one place. Add LOCK_FREE predefines.
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(c_cpp_builtins): Move Legacy HAVE_SYNC predefines to
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new func.
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2011-11-24 Andrew MacLeod <amacleod@redhat.com>
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PR c/51256
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@ -568,6 +568,117 @@ c_cpp_builtins_optimize_pragma (cpp_reader *pfile, tree prev_tree,
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}
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/* This function will emit cpp macros to indicate the presence of various lock
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free atomic operations. */
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static void
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cpp_atomic_builtins (cpp_reader *pfile)
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{
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/* Set a flag for each size of object that compare and swap exists for up to
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a 16 byte object. */
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#define SWAP_LIMIT 17
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bool have_swap[SWAP_LIMIT];
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unsigned int psize;
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/* Clear the map of sizes compare_and swap exists for. */
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memset (have_swap, 0, sizeof (have_swap));
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/* Tell source code if the compiler makes sync_compare_and_swap
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builtins available. */
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#ifndef HAVE_sync_compare_and_swapqi
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#define HAVE_sync_compare_and_swapqi 0
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#endif
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#ifndef HAVE_atomic_compare_and_swapqi
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#define HAVE_atomic_compare_and_swapqi 0
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#endif
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if (HAVE_sync_compare_and_swapqi || HAVE_atomic_compare_and_swapqi)
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{
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cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1");
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have_swap[1] = true;
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}
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#ifndef HAVE_sync_compare_and_swaphi
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#define HAVE_sync_compare_and_swaphi 0
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#endif
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#ifndef HAVE_atomic_compare_and_swaphi
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#define HAVE_atomic_compare_and_swaphi 0
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#endif
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if (HAVE_sync_compare_and_swaphi || HAVE_atomic_compare_and_swaphi)
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{
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cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2");
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have_swap[2] = true;
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}
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#ifndef HAVE_sync_compare_and_swapsi
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#define HAVE_sync_compare_and_swapsi 0
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#endif
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#ifndef HAVE_atomic_compare_and_swapsi
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#define HAVE_atomic_compare_and_swapsi 0
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#endif
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if (HAVE_sync_compare_and_swapsi || HAVE_atomic_compare_and_swapsi)
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{
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cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4");
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have_swap[4] = true;
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}
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#ifndef HAVE_sync_compare_and_swapdi
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#define HAVE_sync_compare_and_swapdi 0
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#endif
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#ifndef HAVE_atomic_compare_and_swapdi
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#define HAVE_atomic_compare_and_swapdi 0
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#endif
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if (HAVE_sync_compare_and_swapdi || HAVE_atomic_compare_and_swapdi)
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{
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cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8");
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have_swap[8] = true;
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}
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#ifndef HAVE_sync_compare_and_swapti
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#define HAVE_sync_compare_and_swapti 0
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#endif
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#ifndef HAVE_atomic_compare_and_swapti
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#define HAVE_atomic_compare_and_swapti 0
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#endif
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if (HAVE_sync_compare_and_swapti || HAVE_atomic_compare_and_swapti)
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{
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cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16");
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have_swap[16] = true;
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}
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/* Tell the source code about various types. These map to the C++11 and C1x
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macros where 2 indicates lock-free always, and 1 indicates sometimes
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lock free. */
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#define SIZEOF_NODE(T) (tree_low_cst (TYPE_SIZE_UNIT (T), 1))
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#define SWAP_INDEX(T) ((SIZEOF_NODE (T) < SWAP_LIMIT) ? SIZEOF_NODE (T) : 0)
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builtin_define_with_int_value ("__GCC_ATOMIC_BOOL_LOCK_FREE",
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(have_swap[SWAP_INDEX (boolean_type_node)]? 2 : 1));
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builtin_define_with_int_value ("__GCC_ATOMIC_CHAR_LOCK_FREE",
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(have_swap[SWAP_INDEX (signed_char_type_node)]? 2 : 1));
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builtin_define_with_int_value ("__GCC_ATOMIC_CHAR16_T_LOCK_FREE",
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(have_swap[SWAP_INDEX (char16_type_node)]? 2 : 1));
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builtin_define_with_int_value ("__GCC_ATOMIC_CHAR32_T_LOCK_FREE",
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(have_swap[SWAP_INDEX (char32_type_node)]? 2 : 1));
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builtin_define_with_int_value ("__GCC_ATOMIC_WCHAR_T_LOCK_FREE",
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(have_swap[SWAP_INDEX (wchar_type_node)]? 2 : 1));
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builtin_define_with_int_value ("__GCC_ATOMIC_SHORT_LOCK_FREE",
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(have_swap[SWAP_INDEX (short_integer_type_node)]? 2 : 1));
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builtin_define_with_int_value ("__GCC_ATOMIC_INT_LOCK_FREE",
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(have_swap[SWAP_INDEX (integer_type_node)]? 2 : 1));
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builtin_define_with_int_value ("__GCC_ATOMIC_LONG_LOCK_FREE",
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(have_swap[SWAP_INDEX (long_integer_type_node)]? 2 : 1));
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builtin_define_with_int_value ("__GCC_ATOMIC_LLONG_LOCK_FREE",
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(have_swap[SWAP_INDEX (long_long_integer_type_node)]? 2 : 1));
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/* ptr_type_node can't be used here since ptr_mode is only set when
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toplev calls backend_init which is not done with -E or pch. */
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psize = POINTER_SIZE / BITS_PER_UNIT;
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if (psize >= SWAP_LIMIT)
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psize = 0;
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builtin_define_with_int_value ("__GCC_ATOMIC_POINTER_LOCK_FREE",
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(have_swap[psize]? 2 : 1));
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}
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/* Hook that registers front end and target-specific built-ins. */
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void
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c_cpp_builtins (cpp_reader *pfile)
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@ -756,53 +867,8 @@ c_cpp_builtins (cpp_reader *pfile)
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if (c_dialect_cxx () && TYPE_UNSIGNED (wchar_type_node))
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cpp_define (pfile, "__WCHAR_UNSIGNED__");
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/* Tell source code if the compiler makes sync_compare_and_swap
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builtins available. */
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#ifndef HAVE_sync_compare_and_swapqi
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#define HAVE_sync_compare_and_swapqi 0
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#endif
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#ifndef HAVE_atomic_compare_and_swapqi
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#define HAVE_atomic_compare_and_swapqi 0
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#endif
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if (HAVE_sync_compare_and_swapqi || HAVE_atomic_compare_and_swapqi)
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cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1");
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#ifndef HAVE_sync_compare_and_swaphi
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#define HAVE_sync_compare_and_swaphi 0
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#endif
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#ifndef HAVE_atomic_compare_and_swaphi
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#define HAVE_atomic_compare_and_swaphi 0
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#endif
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if (HAVE_sync_compare_and_swaphi || HAVE_atomic_compare_and_swaphi)
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cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2");
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#ifndef HAVE_sync_compare_and_swapsi
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#define HAVE_sync_compare_and_swapsi 0
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#endif
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#ifndef HAVE_atomic_compare_and_swapsi
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#define HAVE_atomic_compare_and_swapsi 0
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#endif
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if (HAVE_sync_compare_and_swapsi || HAVE_atomic_compare_and_swapsi)
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cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4");
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#ifndef HAVE_sync_compare_and_swapdi
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#define HAVE_sync_compare_and_swapdi 0
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#endif
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#ifndef HAVE_atomic_compare_and_swapdi
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#define HAVE_atomic_compare_and_swapdi 0
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#endif
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if (HAVE_sync_compare_and_swapdi || HAVE_atomic_compare_and_swapdi)
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cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8");
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#ifndef HAVE_sync_compare_and_swapti
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#define HAVE_sync_compare_and_swapti 0
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#endif
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#ifndef HAVE_atomic_compare_and_swapti
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#define HAVE_atomic_compare_and_swapti 0
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#endif
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if (HAVE_sync_compare_and_swapti || HAVE_atomic_compare_and_swapti)
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cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16");
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cpp_atomic_builtins (pfile);
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#ifdef DWARF2_UNWIND_INFO
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if (dwarf2out_do_cfi_asm ())
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cpp_define (pfile, "__GCC_HAVE_DWARF2_CFI_ASM");
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@ -1,3 +1,10 @@
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2011-11-28 Andrew MacLeod <amacleod@redhat.com>
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* include/bits/atomic_base.h (ATOMIC_*_LOCK_FREE): Use new cpp
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predefined macros.
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* testsuite/29_atomics/headers/atomic/macros.cc: Add BOOL and POINTER
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macro checks. Check for expected compile time values.
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2011-11-28 Paolo Carlini <paolo.carlini@oracle.com>
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PR libstdc++/51288
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@ -91,18 +91,17 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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/// Lock-free Property
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#define LOCKFREE_PROP(T) (__atomic_always_lock_free (sizeof (T), 0) ? 2 : 1)
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#define ATOMIC_BOOL_LOCK_FREE LOCKFREE_PROP (bool)
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#define ATOMIC_CHAR_LOCK_FREE LOCKFREE_PROP (char)
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#define ATOMIC_CHAR16_T_LOCK_FREE LOCKFREE_PROP (char16_t)
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#define ATOMIC_CHAR32_T_LOCK_FREE LOCKFREE_PROP (char32_t)
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#define ATOMIC_WCHAR_T_LOCK_FREE LOCKFREE_PROP (wchar_t)
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#define ATOMIC_SHORT_LOCK_FREE LOCKFREE_PROP (short)
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#define ATOMIC_INT_LOCK_FREE LOCKFREE_PROP (int)
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#define ATOMIC_LONG_LOCK_FREE LOCKFREE_PROP (long)
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#define ATOMIC_LLONG_LOCK_FREE LOCKFREE_PROP (long long)
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#define ATOMIC_POINTER_LOCK_FREE LOCKFREE_PROP (void *)
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#define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE
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#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE
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#define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE
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#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE
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#define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE
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#define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE
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#define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE
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#define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE
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#define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE
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#define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE
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// Base types for atomics.
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template<typename _IntTp>
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@ -20,6 +20,10 @@
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#include <atomic>
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#ifndef ATOMIC_BOOL_LOCK_FREE
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# error "ATOMIC_BOOL_LOCK_FREE must be a macro"
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#endif
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#ifndef ATOMIC_CHAR_LOCK_FREE
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# error "ATOMIC_CHAR_LOCK_FREE must be a macro"
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#endif
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@ -52,6 +56,10 @@
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# error "ATOMIC_LLONG_LOCK_FREE must be a macro"
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#endif
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#ifndef ATOMIC_POINTER_LOCK_FREE
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# error "ATOMIC_POINTER_LOCK_FREE must be a macro"
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#endif
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#ifndef ATOMIC_FLAG_INIT
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#error "ATOMIC_FLAG_INIT_must_be_a_macro"
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#endif
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@ -65,35 +73,43 @@ extern void abort(void);
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int main ()
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{
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if (ATOMIC_CHAR_LOCK_FREE != 0 && ATOMIC_CHAR_LOCK_FREE != 1
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&& ATOMIC_CHAR_LOCK_FREE != 2)
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#if (ATOMIC_BOOL_LOCK_FREE != 1 && ATOMIC_BOOL_LOCK_FREE != 2)
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abort ();
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#endif
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if (ATOMIC_CHAR16_T_LOCK_FREE != 0 && ATOMIC_CHAR16_T_LOCK_FREE != 1
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&& ATOMIC_CHAR16_T_LOCK_FREE != 2)
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#if (ATOMIC_CHAR_LOCK_FREE != 1 && ATOMIC_CHAR_LOCK_FREE != 2)
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abort ();
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#endif
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if (ATOMIC_CHAR32_T_LOCK_FREE != 0 && ATOMIC_CHAR32_T_LOCK_FREE != 1
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&& ATOMIC_CHAR32_T_LOCK_FREE != 2)
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#if (ATOMIC_CHAR16_T_LOCK_FREE != 1 && ATOMIC_CHAR16_T_LOCK_FREE != 2)
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abort ();
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#endif
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if (ATOMIC_WCHAR_T_LOCK_FREE != 0 && ATOMIC_WCHAR_T_LOCK_FREE != 1
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&& ATOMIC_WCHAR_T_LOCK_FREE != 2)
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#if (ATOMIC_CHAR32_T_LOCK_FREE != 1 && ATOMIC_CHAR32_T_LOCK_FREE != 2)
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abort ();
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#endif
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if (ATOMIC_SHORT_LOCK_FREE != 0 && ATOMIC_SHORT_LOCK_FREE != 1
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&& ATOMIC_SHORT_LOCK_FREE != 2)
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#if (ATOMIC_WCHAR_T_LOCK_FREE != 1 && ATOMIC_WCHAR_T_LOCK_FREE != 2)
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abort ();
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#endif
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if (ATOMIC_INT_LOCK_FREE != 0 && ATOMIC_INT_LOCK_FREE != 1
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&& ATOMIC_INT_LOCK_FREE != 2)
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#if (ATOMIC_SHORT_LOCK_FREE != 1 && ATOMIC_SHORT_LOCK_FREE != 2)
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abort ();
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#endif
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if (ATOMIC_LONG_LOCK_FREE != 0 && ATOMIC_LONG_LOCK_FREE != 1
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&& ATOMIC_LONG_LOCK_FREE != 2)
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#if (ATOMIC_INT_LOCK_FREE != 1 && ATOMIC_INT_LOCK_FREE != 2)
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abort ();
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#endif
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if (ATOMIC_LLONG_LOCK_FREE != 0 && ATOMIC_LLONG_LOCK_FREE != 1
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&& ATOMIC_LLONG_LOCK_FREE != 2)
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#if (ATOMIC_LONG_LOCK_FREE != 1 && ATOMIC_LONG_LOCK_FREE != 2)
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abort ();
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#endif
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#if (ATOMIC_LLONG_LOCK_FREE != 1 && ATOMIC_LLONG_LOCK_FREE != 2)
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abort ();
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#endif
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#if (ATOMIC_POINTER_LOCK_FREE != 1 && ATOMIC_POINTER_LOCK_FREE != 2)
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abort ();
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#endif
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}
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