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Diffstat (limited to 'src/core/support/cpu.h')
| -rw-r--r-- | src/core/support/cpu.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/core/support/cpu.h b/src/core/support/cpu.h new file mode 100644 index 0000000000..6ac0db35e5 --- /dev/null +++ b/src/core/support/cpu.h @@ -0,0 +1,49 @@ +/* + * + * Copyright 2014, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef __GRPC_INTERNAL_SUPPORT_CPU_H__ +#define __GRPC_INTERNAL_SUPPORT_CPU_H__ + +/* Interface providing CPU information for currently running system */ + +/* Return the number of CPU cores on the current system. Will return 0 if + if information is not available. */ +int gpr_cpu_num_cores(); + +/* Return the CPU on which the current thread is executing; N.B. This should + be considered advisory only - it is possible that the thread is switched + to a different CPU at any time. Returns a value in range + [0, gpr_cpu_num_cores() - 1] */ +int gpr_cpu_current_cpu(); + +#endif /* __GRPC_INTERNAL_SUPPORT_CPU_H__ */ |