Too many open files - where "msbuild" 2> nul

[thefernman]

After 500 .sln files to build, I get a Too many open files - where "msbuild" 2> nul

Stacktrace:

C:/Projects/project/vendor/bundle/ruby/2.3.0/gems/albacore-3.0.1/lib/albacore/cross_platform_cmd.rb:205:in `popen'
C:/Projects/project/vendor/bundle/ruby/2.3.0/gems/albacore-3.0.1/lib/albacore/cross_platform_cmd.rb:205:in `which'
C:/Projects/project/vendor/bundle/ruby/2.3.0/gems/albacore-3.0.1/lib/albacore/task_types/build.rb:43:in `block in initialize'
C:/Projects/project/vendor/bundle/ruby/2.3.0/gems/albacore-3.0.1/lib/albacore/task_types/build.rb:47:in `initialize'
C:/Projects/project/vendor/bundle/ruby/2.3.0/gems/albacore-3.0.1/lib/albacore/dsl.rb:40:in `new'
C:/Projects/project/vendor/bundle/ruby/2.3.0/gems/albacore-3.0.1/lib/albacore/dsl.rb:40:in `block in build'
C:/Projects/project/vendor/bundle/ruby/2.3.0/gems/rake-10.0.4/lib/rake/task.rb:246:in `block in execute'
C:/Projects/project/vendor/bundle/ruby/2.3.0/gems/rake-10.0.4/lib/rake/task.rb:241:in `each'
C:/Projects/project/vendor/bundle/ruby/2.3.0/gems/rake-10.0.4/lib/rake/task.rb:241:in `execute'

albacore/lib/albacore/cross_platform_cmd.rb

Line 205 in 47454a2

res = IO.popen(cmd) do |io|

Portion of my rakefile

desc 'Build all customers'
task :build_customers do |t|
  logger.info 'Build customer dlls...'
  client_list_paths = Dir.glob(get_relative_path('../customers') + '/**/**/Web')
  client_list_paths.each do |dir|
    clean(dir)
    sln_path = dir + '/../Web.sln'
    out_dir = dir.gsub('/customers/','/build/') + '/Distrib'

    logger.info "Building: #{sln_path} out to #{out_dir}"
    build do |b|
      b.sln  = sln_path                         # alt. name
      b.target = ['Clean', 'Build']             # call with an array of targets or just a single target
      b.prop 'Configuration', 'Release'         # call with 'key, value', to specify a MsBuild property
      b.prop 'OutDir', out_dir                  # call with 'key, value', to specify a MsBuild property
      b.prop 'ToolsVersion' , '4.6'
      b.clp 'ShowEventId'                       # any parameters you want to pass to the console logger of MsBuild
      b.logging = 'm'                           # detailed logging mode. The available verbosity levels are: q[uiet], m[inimal], n[ormal], d[etailed], and diag[nostic]
      b.nologo
    end
  end
end

[haf]

Without understanding your error message; that code won't work because build only declares a task; it doesn't run it. My guess is that you somehow get that declaration running and start umpteen msbuild processes in parallel.

[thefernman]

Do you have a suggestion? That seems to be the problem. build is prepped for all my solutions, and when that's done, those tasks are executed.

[thefernman]

Currently, this is what my code looks like and I'm still getting too many files open error.

EDIT: I fixed it by spawning processes.

`desc 'Build all customers'
task :build_customers do |t|
logger.info 'Build customer dlls...'
(Dir.glob(get_relative_path('../customers') + '///Web')).each do |dir|
clean(dir)
sln_path = dir + '/../Web.sln'
out_dir = dir.gsub('/customers/','/build/') + '/Distrib'
Rake::Task['build_client'].execute :sln_path => sln_path, :out_dir => out_dir
end
end

build :build_client, [:sln_path, :out_dir] do |b, args|
sln_path = args[:sln_path]
out_dir = args[:out_dir]
logger.info "Building: #{sln_path} out to #{out_dir}"

b.sln = sln_path
b.target = ['Clean', 'Build']
b.prop 'Configuration', 'Release'
b.prop 'OutDir', out_dir
b.prop 'ToolsVersion' , '4.6'
b.logging = 'm'
b.nologo
end`

[haf]

Start by formatting your code and I will look at it.