Add the files

1 files changed, 46 insertions, 0 deletions

diff --git a/src/detection/cpuusage/cpuusage_linux.c b/src/detection/cpuusage/cpuusage_linux.c
new file mode 100644
index 0000000..fd2f43b
--- /dev/null
+++ b/src/detection/cpuusage/cpuusage_linux.c
@@ -0,0 +1,46 @@
+#include "fastfetch.h"
+#include "detection/cpuusage/cpuusage.h"
+#include "common/io.h"
+
+#include <stdio.h>
+#include <inttypes.h>
+
+const char* ffGetCpuUsageInfo(FFlist* cpuTimes) {
+    char buf[PROC_FILE_BUFFSIZ];
+    ssize_t nRead = ffReadFileData("/proc/stat", ARRAY_SIZE(buf) - 1, buf);
+    if (nRead < 0) {
+#ifdef __ANDROID__
+        return "Accessing \"/proc/stat\" is restricted on Android O+";
+#else
+        return "ffReadFileData(\"/proc/stat\", ARRAY_SIZE(buf) - 1, buf) failed";
+#endif
+    }
+    buf[nRead] = '\0';
+
+    // Skip first line
+    char* start = NULL;
+    if ((start = strchr(buf, '\n')) == NULL) {
+        return "skip first line failed";
+    }
+    ++start;
+
+    uint64_t user = 0, nice = 0, system = 0, idle = 0, iowait = 0, irq = 0, softirq = 0;
+    char* token = NULL;
+    while ((token = strchr(start, '\n'))) {
+        if (sscanf(start, "cpu%*d%" PRIu64 "%" PRIu64 "%" PRIu64 "%" PRIu64 "%" PRIu64 "%" PRIu64 "%" PRIu64 "%*[^\n]\n", &user, &nice, &system, &idle, &iowait, &irq, &softirq) == 7) {
+            uint64_t inUse = user + nice + system + irq + softirq;
+            uint64_t total = inUse + idle + iowait;
+
+            FFCpuUsageInfo* info = FF_LIST_ADD(FFCpuUsageInfo, *cpuTimes);
+            *info = (FFCpuUsageInfo) {
+                .inUseAll = inUse,
+                .totalAll = total,
+            };
+        } else {
+            break;
+        }
+        start = token + 1;
+    }
+
+    return NULL;
+}