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Date: Sun, 27 Aug 2023 17:57:25 +0200 Message-Id: <20230827155746.84781-12-kariem.taha2.7@gmail.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230827155746.84781-1-kariem.taha2.7@gmail.com> References: <20230827155746.84781-1-kariem.taha2.7@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::229; envelope-from=kariem.taha2.7@gmail.com; helo=mail-lj1-x229.google.com X-Spam_score_int: -4 X-Spam_score: -0.5 X-Spam_bar: / X-Spam_report: (-0.5 / 5.0 requ) BAYES_00=-1.9, DATE_IN_PAST_24_48=1.34, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Kyle Evans Signed-off-by: Kyle Evans Signed-off-by: Karim Taha --- bsd-user/bsd-proc.c | 39 +++++++++++++++++++++++++++++++++++++++ bsd-user/bsd-proc.h | 2 ++ 2 files changed, 41 insertions(+) diff --git a/bsd-user/bsd-proc.c b/bsd-user/bsd-proc.c index 49c0fb67d0..dd6bad6de3 100644 --- a/bsd-user/bsd-proc.c +++ b/bsd-user/bsd-proc.c @@ -185,3 +185,42 @@ int host_to_target_waitstatus(int status) return status; } +int bsd_get_ncpu(void) +{ + static int ncpu = -1; + + if (ncpu != -1) { + return ncpu; + } + if (ncpu == -1) { + cpuset_t mask; + + CPU_ZERO(&mask); + + if (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, -1, sizeof(mask), + &mask) == 0) { + ncpu = CPU_COUNT(&mask); + } + } +#ifdef _SC_NPROCESSORS_ONLN + if (ncpu == -1) + ncpu = sysconf(_SC_NPROCESSORS_ONLN); +#endif +#if defined(CTL_HW) && defined(HW_NCPU) + if (ncpu == -1) { + int mib[2] = {CTL_HW, HW_NCPU}; + size_t sz; + + sz = sizeof(ncpu); + if (sysctl(mib, 2, &ncpu, &sz, NULL, NULL) == -1) { + ncpu = -1; + } + } +#endif + if (ncpu == -1) { + gemu_log("XXX Missing bsd_get_ncpu() implementation\n"); + ncpu = 1; + } + return ncpu; +} + diff --git a/bsd-user/bsd-proc.h b/bsd-user/bsd-proc.h index 048773a75d..b6225e520e 100644 --- a/bsd-user/bsd-proc.h +++ b/bsd-user/bsd-proc.h @@ -26,6 +26,8 @@ #include "gdbstub/syscalls.h" #include "qemu/plugin.h" +int bsd_get_ncpu(void); + /* exit(2) */ static inline abi_long do_bsd_exit(void *cpu_env, abi_long arg1) {