Memory used segment #496
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| Original file line number | Diff line number | Diff line change |
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| # shellcheck shell=bash | ||
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| # based on https://github.com/thewtex/tmux-mem-cpu-load | ||
| # shellcheck disable=SC2001 | ||
| __tp_mem_used_info() { | ||
| if tp_shell_is_macos; then | ||
| local stats | ||
| local bytes_per_page | ||
| local free_pages | ||
| local external_pages | ||
| local mem_total_bytes | ||
| local mem_used_bytes | ||
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| stats=$(vm_stat | tr '\n' ' ') | ||
| bytes_per_page=$(echo "$stats" | sed -e 's/.*page size of \([0-9]*\).*/\1/') | ||
| mem_total_bytes=$(sysctl hw.memsize | sed -e 's/^hw.memsize: \([0-9*]\)/\1/') | ||
| free_pages=$(echo "$stats" | sed -e 's/.*Pages free: *\([0-9]*\).*/\1/') | ||
| external_pages=$(echo "$stats" | sed -e 's/.*File-backed pages: *\([0-9]*\).*/\1/') | ||
| mem_used_bytes=$(echo "$mem_total_bytes - ($free_pages + $external_pages) * $bytes_per_page" | bc -l) | ||
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| echo "$mem_used_bytes" "$mem_total_bytes" | ||
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| elif tp_shell_is_linux; then | ||
| local meminfo | ||
| local mem_total | ||
| local mem_total_bytes | ||
| local mem_free | ||
| local shmem | ||
| local buffers | ||
| local cached | ||
| local s_reclaimable | ||
| local mem_used_bytes | ||
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| meminfo=$(tr '\n' ' ' < /proc/meminfo) | ||
| mem_total=$(echo "$meminfo" | sed -e 's/^MemTotal: *\([0-9]*\).*/\1/') | ||
| mem_total_bytes=$(echo "$mem_total * 1024" | bc -l) | ||
| mem_free=$(echo "$meminfo" | sed -e 's/.* MemFree: *\([0-9]*\).*/\1/') | ||
| shmem=$(echo "$meminfo" | sed -e 's/.* Shmem: *\([0-9]*\).*/\1/') | ||
| buffers=$(echo "$meminfo" | sed -e 's/.* Buffers: *\([0-9]*\).*/\1/') | ||
| cached=$(echo "$meminfo" | sed -e 's/.* Cached: *\([0-9]*\).*/\1/') | ||
| s_reclaimable=$(echo "$meminfo" | sed -e 's/.* SReclaimable: *\([0-9]*\).*/\1/') | ||
| mem_used_bytes=$(echo "($mem_total - $mem_free + $shmem - $buffers - $cached - $s_reclaimable) * 1024" | bc -l) | ||
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| echo "$mem_used_bytes" "$mem_total_bytes" | ||
| fi | ||
| }; | ||
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| tp_mem_used_gigabytes() { | ||
| read -r mem_used_bytes mem_total_bytes < <(__tp_mem_used_info) | ||
| __round "$(echo "$mem_used_bytes / 1073741824" | bc -l)" 2 | ||
| } | ||
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| tp_mem_used_megabytes() { | ||
| read -r mem_used_bytes mem_total_bytes < <(__tp_mem_used_info) | ||
| __round "$(echo "$mem_used_bytes / 1048576" | bc -l)" 0 | ||
| } | ||
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| tp_mem_used_percentage_at_least() { | ||
| local threshold_percentage="$1" | ||
| read -r mem_used_bytes mem_total_bytes < <(__tp_mem_used_info) | ||
| echo "($mem_used_bytes / $mem_total_bytes) * 100 >= $threshold_percentage" | bc -l | ||
| } | ||
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| # source https://askubuntu.com/a/179949 | ||
| # Rounds positive numbers up to the number of digits to the right of the decimal point. | ||
| # Example: "__round 1.2345 3" -> "((1000 * 1.2345) + 0.5) / 1000" -> "1.235" | ||
| __round() { | ||
| local number="$1" | ||
| local digits="$2" | ||
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| env printf "%.${digits}f" "$(echo "scale=${digits};(((10^${digits})*${number})+0.5)/(10^${digits})" | bc)" | ||
| }; | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,49 @@ | ||
| # shellcheck shell=bash | ||
| # Prints memory usage | ||
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| TMUX_POWERLINE_SEG_MEM_USED_ICON_DEFAULT=" " | ||
| TMUX_POWERLINE_SEG_MEM_USED_UNIT_DEFAULT="GB" | ||
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| generate_segmentrc() { | ||
| read -r -d '' rccontents <<EORC | ||
| # Memory icon | ||
| export TMUX_POWERLINE_SEG_MEM_USED_ICON="${TMUX_POWERLINE_SEG_MEM_USED_ICON_DEFAULT}" | ||
| # Measure unit of memory: "GB" or "MB". | ||
| # In context of this segment "1 GB" equals "2 ^ 30 bytes" and "1 MB" eqauls "2 ^ 20 bytes". | ||
| export TMUX_POWERLINE_SEG_MEM_USED_UNIT="${TMUX_POWERLINE_SEG_MEM_USED_UNIT_DEFAULT}" | ||
| EORC | ||
| echo "$rccontents" | ||
| } | ||
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| run_segment() { | ||
| __process_settings | ||
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| local mem_used | ||
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| if [ "$TMUX_POWERLINE_SEG_MEM_USED_UNIT" = "GB" ]; then | ||
| mem_used="$(tp_mem_used_gigabytes) GB" | ||
| elif [ "$TMUX_POWERLINE_SEG_MEM_USED_UNIT" = "MB" ]; then | ||
| mem_used="$(tp_mem_used_megabytes) MB" | ||
| else | ||
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Owner
There was a problem hiding this comment. For robustness, we could check for As of recent, we have a way to report errors with tmux-powerline/segments/weather.sh Line 100 in 87c9014 |
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| tp_err_seg "Err: Invalid TMUX_POWERLINE_SEG_MEM_USED_UNIT value - $TMUX_POWERLINE_SEG_MEM_USED_UNIT" | ||
| return 1 | ||
| fi | ||
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| if [ -n "$mem_used" ]; then | ||
| echo "${TMUX_POWERLINE_SEG_MEM_USED_ICON}${mem_used}" | ||
| return 0 | ||
| else | ||
| tp_err_seg "Err: Failed to obtain memory usage" | ||
| return 1 | ||
| fi | ||
| } | ||
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| __process_settings() { | ||
| if [ -z "$TMUX_POWERLINE_SEG_MEM_USED_ICON" ]; then | ||
| export TMUX_POWERLINE_SEG_MEM_USED_ICON="${TMUX_POWERLINE_SEG_MEM_USED_ICON_DEFAULT}" | ||
| fi | ||
| if [ -z "$TMUX_POWERLINE_SEG_MEM_USED_UNIT" ]; then | ||
| export TMUX_POWERLINE_SEG_MEM_USED_UNIT="${TMUX_POWERLINE_SEG_MEM_USED_UNIT_DEFAULT}" | ||
| fi | ||
| }; | ||
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I would suggest in functions to make use of named local variables for documentation purposes, and readability. Putting them at the top of a function gives bash functions something similar to an "argument list", code that documents! So e.g.
and then use
$threshold_bytesin the function.