From 513a658c87b5fa23533a6b6db36e6d36af6a861d Mon Sep 17 00:00:00 2001 From: moneromooo-monero Date: Thu, 28 Apr 2016 20:25:33 +0100 Subject: add a --max-concurrency flag It sets the max number of threads to use for a parallel job. This is different that the number of total threads, since monero binaries typically start a lot of them. --- src/common/util.cpp | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'src/common/util.cpp') diff --git a/src/common/util.cpp b/src/common/util.cpp index 2337f5766..a53a9be52 100644 --- a/src/common/util.cpp +++ b/src/common/util.cpp @@ -422,4 +422,27 @@ std::string get_nix_version_display_string() umask(mode); #endif } + + namespace + { + boost::mutex max_concurrency_lock; + unsigned max_concurrency = boost::thread::hardware_concurrency(); + } + + void set_max_concurrency(unsigned n) + { + if (n < 1) + n = boost::thread::hardware_concurrency(); + unsigned hwc = boost::thread::hardware_concurrency(); + if (n > hwc) + n = hwc; + boost::lock_guard lock(max_concurrency_lock); + max_concurrency = n; + } + + unsigned get_max_concurrency() + { + boost::lock_guard lock(max_concurrency_lock); + return max_concurrency; + } } -- cgit v1.2.3