Linux: individually show shared memory

Shmem: Total memory used by shared memory (shmem) and tmpfs

Source: https://www.kernel.org/doc/Documentation/filesystems/proc.txt

Closes: #556

1 files changed, 15 insertions, 6 deletions

diff --git a/MemoryMeter.c b/MemoryMeter.c
index 7075f229..0304bb9a 100644
--- a/MemoryMeter.c
+++ b/MemoryMeter.c
@@ -18,7 +18,8 @@ in the source distribution for its full text.
 static const int MemoryMeter_attributes[] = {
    MEMORY_USED,
    MEMORY_BUFFERS,
-   MEMORY_CACHE
+   MEMORY_CACHE,
+   MEMORY_SHARED
 };
 
 static void MemoryMeter_updateValues(Meter* this) {
@@ -26,14 +27,15 @@ static void MemoryMeter_updateValues(Meter* this) {
    size_t size = sizeof(this->txtBuffer);
    int written;
 
-   /* available memory is not supported on all platforms */
+   /* shared and available memory are not supported on all platforms */
    this->values[3] = NAN;
+   this->values[4] = NAN;
    Platform_setMemoryValues(this);
 
    /* Do not print available memory in bar mode */
-   this->curItems = 3;
+   this->curItems = 4;
 
-   written = Meter_humanUnit(buffer, isnan(this->values[3]) ? this->values[0] : this->total - this->values[3], size);
+   written = Meter_humanUnit(buffer, isnan(this->values[4]) ? this->values[0] : this->total - this->values[4], size);
    METER_BUFFER_CHECK(buffer, size, written);
 
    METER_BUFFER_APPEND_CHR(buffer, size, '/');
@@ -61,9 +63,16 @@ static void MemoryMeter_display(const Object* cast, RichString* out) {
    RichString_appendAscii(out, CRT_colors[METER_TEXT], " cache:");
    RichString_appendAscii(out, CRT_colors[MEMORY_CACHE], buffer);
 
-   /* available memory is not supported on all platforms */
+   /* shared memory is not supported on all platforms */
    if (!isnan(this->values[3])) {
       Meter_humanUnit(buffer, this->values[3], sizeof(buffer));
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], " shared:");
+      RichString_appendAscii(out, CRT_colors[MEMORY_SHARED], buffer);
+   }
+
+   /* available memory is not supported on all platforms */
+   if (!isnan(this->values[4])) {
+      Meter_humanUnit(buffer, this->values[4], sizeof(buffer));
       RichString_appendAscii(out, CRT_colors[METER_TEXT], " available:");
       RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer);
    }
@@ -77,7 +86,7 @@ const MeterClass MemoryMeter_class = {
    },
    .updateValues = MemoryMeter_updateValues,
    .defaultMode = BAR_METERMODE,
-   .maxItems = 4,
+   .maxItems = 5,
    .total = 100.0,
    .attributes = MemoryMeter_attributes,
    .name = "Memory",