Changeset e43cdac in mainline for uspace/app/top/top.c

Timestamp:

2010-04-13T12:57:05Z (14 years ago)

Author:

Stanislav Kozina <stanislav.kozina@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

a307beb

Parents:

638927a

Message:

Removed all floating point computation from top utility.
Now all percentages are computed using fixed point.
FPU was emmiting exception 16 when storing float from FP register into the
memory and I really cannot figure out why:-(

File:

• uspace/app/top/top.c (modified) (2 diffs)

uspace/app/top/top.c

@@ -110 +110 @@
                 uint64_t busy = new_data->cpus[i].busy_ticks - old_data->cpus[i].busy_ticks;
                 uint64_t sum = idle + busy;
-                new_data->cpu_perc[i].idle = (float)(idle * 100) / sum;
-                new_data->cpu_perc[i].busy = (float)(busy * 100) / sum;
+                FRACTION_TO_FLOAT(new_data->cpu_perc[i].idle, idle * 100, sum);
+                FRACTION_TO_FLOAT(new_data->cpu_perc[i].busy, busy * 100, sum);
         }
 
@@ -143 +143 @@
         new_data->task_perc = malloc(new_data->task_count * sizeof(task_perc_t));
         for (i = 0; i < new_data->task_count; ++i) {
-                new_data->task_perc[i].mem = (float)(new_data->taskinfos[i].virt_mem * 100) / mem_total;
-                new_data->task_perc[i].ucycles = (float)(ucycles_diff[i] * 100) / ucycles_total;
-                new_data->task_perc[i].kcycles = (float)(kcycles_diff[i] * 100) / kcycles_total;
+                FRACTION_TO_FLOAT(new_data->task_perc[i].mem, new_data->taskinfos[i].virt_mem * 100, mem_total);
+                FRACTION_TO_FLOAT(new_data->task_perc[i].ucycles, ucycles_diff[i] * 100, ucycles_total);
+                FRACTION_TO_FLOAT(new_data->task_perc[i].kcycles, kcycles_diff[i] * 100, kcycles_total);
         }