[v0.81][ARM][Refactoring] Refactoring and very basic ARM support

src/common/cpu.c

@@ -0,0 +1,179 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <stdbool.h>
+
+#include "../common/global.h"
+#include "cpu.h"
+
+#ifdef ARCH_X86
+  #include "../x86/uarch.h"
+#elif ARCH_ARM
+  #include "../arm/uarch.h"
+#endif
+
+#define STRING_UNKNOWN    "Unknown"
+#define STRING_YES        "Yes"
+#define STRING_NO         "No"
+#define STRING_NONE       "None"
+#define STRING_MEGAHERZ   "MHz"
+#define STRING_GIGAHERZ   "GHz"
+#define STRING_KILOBYTES  "KB"
+#define STRING_MEGABYTES  "MB"
+
+VENDOR get_cpu_vendor(struct cpuInfo* cpu) {
+  return cpu->cpu_vendor;
+}
+
+uint32_t get_nsockets(struct topology* topo) {
+  return topo->sockets;
+}
+
+int64_t get_freq(struct frequency* freq) {
+  return freq->max;
+}
+
+char* get_str_sockets(struct topology* topo) {
+  char* string = malloc(sizeof(char) * 2);
+  int32_t sanity_ret = snprintf(string, 2, "%d", topo->sockets);
+  if(sanity_ret < 0) {
+    printBug("get_str_sockets: snprintf returned a negative value for input: '%d'", topo->sockets);
+    return NULL;
+  }
+  return string;
+}
+
+char* get_str_cpu_name(struct cpuInfo* cpu) {
+  return cpu->cpu_name;    
+}
+
+int32_t get_value_as_smallest_unit(char ** str, uint32_t value) {
+  int32_t sanity_ret;
+  *str = malloc(sizeof(char)* 11); //8 for digits, 2 for units
+
+  if(value/1024 >= 1024)
+    sanity_ret = snprintf(*str, 10,"%.4g"STRING_MEGABYTES, (double)value/(1<<20));
+  else
+    sanity_ret = snprintf(*str, 10,"%.4g"STRING_KILOBYTES, (double)value/(1<<10));  
+  
+  return sanity_ret;
+}
+
+// String functions 
+char* get_str_cache_two(int32_t cache_size, uint32_t physical_cores) {
+  // 4 for digits, 2 for units, 2 for ' (', 3 digits, 2 for units and 7 for ' Total)'
+  uint32_t max_size = 4+2 + 2 + 4+2 + 7 + 1;
+  int32_t sanity_ret;
+  char* string = malloc(sizeof(char) * max_size);  
+  char* tmp1;
+  char* tmp2;  
+  int32_t tmp1_len = get_value_as_smallest_unit(&tmp1, cache_size);
+  int32_t tmp2_len = get_value_as_smallest_unit(&tmp2, cache_size * physical_cores);
+  
+  if(tmp1_len < 0) {
+    printBug("get_value_as_smallest_unit: snprintf returned a negative value for input: %d\n", cache_size);
+    return NULL;    
+  }
+  if(tmp2_len < 0) {
+    printBug("get_value_as_smallest_unit: snprintf returned a negative value for input: %d\n", cache_size * physical_cores);
+    return NULL;    
+  }
+    
+  uint32_t size = tmp1_len + 2 + tmp2_len + 7 + 1;
+  sanity_ret = snprintf(string, size, "%s (%s Total)", tmp1, tmp2);  
+  
+  if(sanity_ret < 0) {
+    printBug("get_str_cache_two: snprintf returned a negative value for input: '%s' and '%s'\n", tmp1, tmp2);
+    return NULL;    
+  }
+  
+  free(tmp1);
+  free(tmp2);
+  return string;
+}
+
+char* get_str_cache_one(int32_t cache_size) {
+  // 4 for digits, 2 for units, 2 for ' (', 3 digits, 2 for units and 7 for ' Total)'
+  uint32_t max_size = 4+2 + 1;
+  int32_t sanity_ret;
+  char* string = malloc(sizeof(char) * max_size);  
+  char* tmp;
+  int32_t tmp_len = get_value_as_smallest_unit(&tmp, cache_size);
+  
+  if(tmp_len < 0) {
+    printBug("get_value_as_smallest_unit: snprintf returned a negative value for input: %d", cache_size);
+    return NULL;    
+  }
+      
+  uint32_t size = tmp_len + 1;
+  sanity_ret = snprintf(string, size, "%s", tmp);
+  
+  if(sanity_ret < 0) {
+    printBug("get_str_cache_one: snprintf returned a negative value for input: '%s'", tmp);
+    return NULL;    
+  }
+  free(tmp);
+  return string;
+}
+
+char* get_str_cache(int32_t cache_size, int32_t num_caches) {
+  if(num_caches > 1)
+    return get_str_cache_two(cache_size, num_caches);
+  else
+    return get_str_cache_one(cache_size);
+}
+
+char* get_str_l1i(struct cache* cach) {
+  return get_str_cache(cach->L1i->size, cach->L1i->num_caches);
+}
+
+char* get_str_l1d(struct cache* cach) {
+  return get_str_cache(cach->L1d->size, cach->L1d->num_caches);
+}
+
+char* get_str_l2(struct cache* cach) {
+  assert(cach->L2->exists);
+  return get_str_cache(cach->L2->size, cach->L2->num_caches);
+}
+
+char* get_str_l3(struct cache* cach) {
+  if(!cach->L3->exists)
+    return NULL;  
+  return get_str_cache(cach->L3->size, cach->L3->num_caches);
+}
+
+char* get_str_freq(struct frequency* freq) {
+  //Max 3 digits and 3 for '(M/G)Hz' plus 1 for '\0'
+  uint32_t size = (4+3+1);
+  assert(strlen(STRING_UNKNOWN)+1 <= size);
+  char* string = malloc(sizeof(char)*size);
+  if(freq->max == UNKNOWN_FREQ)
+    snprintf(string,strlen(STRING_UNKNOWN)+1,STRING_UNKNOWN);
+  else if(freq->max >= 1000)
+    snprintf(string,size,"%.2f"STRING_GIGAHERZ,(float)(freq->max)/1000);
+  else
+    snprintf(string,size,"%.2f"STRING_MEGAHERZ,(float)(freq->max));
+  return string;
+}
+
+void free_cache_struct(struct cache* cach) {
+  for(int i=0; i < 4; i++) free(cach->cach_arr[i]);
+  free(cach->cach_arr);
+  free(cach);
+}
+
+void free_freq_struct(struct frequency* freq) {
+  free(freq);
+}
+
+void free_hv_struct(struct hypervisor* hv) {
+  free(hv);
+}
+
+void free_cpuinfo_struct(struct cpuInfo* cpu) {
+  free_uarch_struct(cpu->arch);
+  free_hv_struct(cpu->hv);
+  free(cpu->cpu_name);
+  free(cpu);
+}