* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
* Reference: ISO C99 standard 5.2.4
*/
#include <float.h> /* C99 floating point definitions */
#include <limits.h> /* C99 limits */
#include <babeltrace/endian.h>
+#include <pthread.h>
/*
* This library is limited to binary representation of floating point values.
#endif
};
+/*
+ * This mutex protects the static temporary float and double
+ * declarations (static_float_declaration and static_double_declaration).
+ */
+static pthread_mutex_t float_mutex = PTHREAD_MUTEX_INITIALIZER;
+
static struct declaration_float *static_float_declaration,
*static_double_declaration;
struct pos_len {
- size_t sign_start, exp_start, mantissa_start, len;
+ size_t len;
};
-int _ctf_float_copy(struct stream_pos *destp,
+static void float_lock(void)
+{
+ int ret;
+
+ ret = pthread_mutex_lock(&float_mutex);
+ assert(!ret);
+}
+
+static void float_unlock(void)
+{
+ int ret;
+
+ ret = pthread_mutex_unlock(&float_mutex);
+ assert(!ret);
+}
+
+static int _ctf_float_copy(struct bt_stream_pos *destp,
struct definition_float *dest_definition,
- struct stream_pos *srcp,
+ struct bt_stream_pos *srcp,
const struct definition_float *src_definition)
{
int ret;
return 0;
}
-int ctf_float_read(struct stream_pos *ppos, struct definition *definition)
+int ctf_float_read(struct bt_stream_pos *ppos, struct bt_definition *definition)
{
struct definition_float *float_definition =
container_of(definition, struct definition_float, p);
float_definition->declaration;
struct ctf_stream_pos *pos = ctf_pos(ppos);
union doubleIEEE754 u;
- struct definition *tmpdef;
+ struct bt_definition *tmpdef;
struct definition_float *tmpfloat;
struct ctf_stream_pos destp;
+ struct mmap_align mma;
int ret;
+ float_lock();
switch (float_declaration->mantissa->len + 1) {
case FLT_MANT_DIG:
tmpdef = static_float_declaration->p.definition_new(
NULL, 0, 0, "__tmpfloat");
break;
default:
- return -EINVAL;
+ ret = -EINVAL;
+ goto end;
}
tmpfloat = container_of(tmpdef, struct definition_float, p);
+ memset(&destp, 0, sizeof(destp));
ctf_init_pos(&destp, -1, O_RDWR);
- destp.base = (char *) u.bits;
+ mmap_align_set_addr(&mma, (char *) u.bits);
+ destp.base_mma = &mma;
destp.packet_size = sizeof(u) * CHAR_BIT;
ctf_align_pos(pos, float_declaration->p.alignment);
ret = _ctf_float_copy(&destp.parent, tmpfloat, ppos, float_definition);
float_definition->value = u.vd;
break;
default:
- return -EINVAL;
+ ret = -EINVAL;
+ goto end_unref;
}
- definition_unref(tmpdef);
+
+end_unref:
+ bt_definition_unref(tmpdef);
+end:
+ float_unlock();
return ret;
}
-int ctf_float_write(struct stream_pos *ppos, struct definition *definition)
+int ctf_float_write(struct bt_stream_pos *ppos, struct bt_definition *definition)
{
struct definition_float *float_definition =
container_of(definition, struct definition_float, p);
float_definition->declaration;
struct ctf_stream_pos *pos = ctf_pos(ppos);
union doubleIEEE754 u;
- struct definition *tmpdef;
+ struct bt_definition *tmpdef;
struct definition_float *tmpfloat;
struct ctf_stream_pos srcp;
+ struct mmap_align mma;
int ret;
+ float_lock();
switch (float_declaration->mantissa->len + 1) {
case FLT_MANT_DIG:
tmpdef = static_float_declaration->p.definition_new(
NULL, 0, 0, "__tmpfloat");
break;
default:
- return -EINVAL;
+ ret = -EINVAL;
+ goto end;
}
tmpfloat = container_of(tmpdef, struct definition_float, p);
ctf_init_pos(&srcp, -1, O_RDONLY);
- srcp.base = (char *) u.bits;
+ mmap_align_set_addr(&mma, (char *) u.bits);
+ srcp.base_mma = &mma;
srcp.packet_size = sizeof(u) * CHAR_BIT;
switch (float_declaration->mantissa->len + 1) {
case FLT_MANT_DIG:
u.vd = float_definition->value;
break;
default:
- return -EINVAL;
+ ret = -EINVAL;
+ goto end_unref;
}
ctf_align_pos(pos, float_declaration->p.alignment);
ret = _ctf_float_copy(ppos, float_definition, &srcp.parent, tmpfloat);
- definition_unref(tmpdef);
+
+end_unref:
+ bt_definition_unref(tmpdef);
+end:
+ float_unlock();
return ret;
}
+static
void __attribute__((constructor)) ctf_float_init(void)
{
static_float_declaration =
- float_declaration_new(FLT_MANT_DIG,
+ bt_float_declaration_new(FLT_MANT_DIG,
sizeof(float) * CHAR_BIT - FLT_MANT_DIG,
BYTE_ORDER,
__alignof__(float));
static_double_declaration =
- float_declaration_new(DBL_MANT_DIG,
+ bt_float_declaration_new(DBL_MANT_DIG,
sizeof(double) * CHAR_BIT - DBL_MANT_DIG,
BYTE_ORDER,
__alignof__(double));
}
+static
void __attribute__((destructor)) ctf_float_fini(void)
{
- declaration_unref(&static_float_declaration->p);
- declaration_unref(&static_double_declaration->p);
+ bt_declaration_unref(&static_float_declaration->p);
+ bt_declaration_unref(&static_double_declaration->p);
}
projects / babeltrace.git / blobdiff